Today's Image of the Day from the European Space Agency features the barred spiral galaxy NGC 3783, which is located about 130 million light-years away in the constellation Centaurus. NGC 3783 is also the most prominent of a galaxy group (by the same name) that contains 47 galaxies. 



<h2 class="wp-block-heading" id="h-galaxy-groups">Galaxy groups</h2>



“Like galaxy clusters, galaxy groups are aggregates of gravitationally bound galaxies. Galaxy groups, however, are less massive and contain fewer members than <a href="https://www.earth.com/news/titanic-galaxy-cluster-collision-defies-all-current-understanding-of-the-universe/" target="_blank" rel="noreferrer noopener">galaxy clusters</a> do: where galaxy clusters can contain hundreds or even thousands of constituent galaxies, galaxy groups do not typically include more than 50,” noted <a href="https://www.esa.int/" target="_blank" rel="noreferrer noopener">ESA</a>.



“The Milky Way is actually part of a galaxy group, known as the Local Group, which contains two other large galaxies (Andromeda and the Triangulum galaxy), as well as several dozen satellite and dwarf galaxies.”



<h2 class="wp-block-heading" id="h-hd-101274-a-blue-giant-star">HD 101274: A blue giant star</h2>



The bright object that appears to the right of the galaxy is the star HD 101274. “The perspective in this image makes the star and the galaxy look like close companions, but this is an illusion. HD 101274 lies only about 1,530 light-years from Earth, meaning it is about 85 thousand times closer than NGC 3783,” explained ESA.&nbsp;



The star is part of the NGC 3766 cluster, which is sometimes referred to as the Pearl Cluster, an open cluster known for its richness in bright stars and its relatively young age.



HD 101274 is categorized as a blue giant star, characterized by its high temperature and luminosity. 



Blue giants are massive stars that have left the main sequence phase of stellar evolution and are burning helium or heavier elements in their cores. These stars are known for their short lifespans relative to smaller stars due to their rapid consumption of nuclear fuel.



<h2 class="wp-block-heading" id="h-significance-of-blue-giants">Significance of blue giants</h2>



<a href="https://www.earth.com/news/dark-stars-scientists-discover-a-new-type-of-star-powered-by-dark-matter/" target="_blank" rel="noreferrer noopener">Stars</a> like HD 101274 are important for astronomers because they help in studying the properties of stellar populations in clusters and the dynamics of stellar evolution in different environments. 



The spectral and photometric observations of such stars can provide valuable insights into the characteristics of their atmospheres, internal structures, and the processes occurring within and around them.



<h2 class="wp-block-heading" id="h-bright-central-region-of-ngc-3783">Bright central region of NGC 3783</h2>



One of the most interesting aspects of NGC 3783 is that it harbors an active galactic nucleus, meaning its central region is exceptionally luminous, likely due to the presence of a supermassive black hole. This black hole is actively accreting material, which emits a substantial amount of radiation as it spirals inward and heats up.



The galaxy is particularly known for its bright central region and has been studied extensively in the ultraviolet and X-ray light spectra to understand better the properties of the accretion disk around the black hole and the complex dynamics of the material surrounding it. These studies are crucial for understanding the physics of active galactic nuclei and the role they play in <a href="https://www.earth.com/news/galaxies-like-our-own-milky-way-are-not-unique/" target="_blank" rel="noreferrer noopener">galaxy evolution</a>.



According to ESA, NGC 3783 is a&nbsp;Type I Seyfert galaxy. “In this image it is recorded by Hubble in incredible detail, from its glowing central bar to its narrow, winding arms and the dust threaded through them, thanks to five separate images taken in different wavelengths of light," noted ESA.



“In fact, the galactic center is bright enough to Hubble that it exhibits diffraction spikes, normally only seen on stars such as HD 101274.”



<h2 class="wp-block-heading" id="h-more-about-the-ngc-3783-galaxy-group">More about the NGC 3783 galaxy group</h2>



The NGC 3783 group is part of the larger Hydra-Centaurus Supercluster, which itself is a massive collection of <a href="https://www.earth.com/news/shapes-of-one-million-galaxies-hint-at-the-universes-origins/" target="_blank" rel="noreferrer noopener">galaxies</a> and galaxy clusters located primarily in the constellations of Hydra and Centaurus.



The NGC 3783 group consists of several galaxies that are gravitationally bound and interact with each other. These interactions can influence the galaxies' evolution through mechanisms like tidal forces and merger events, which can trigger star formation, fuel central black holes, and reshape the galaxies' structures.



Studying groups like the NGC 3783 group helps astronomers understand how <a href="https://www.earth.com/news/ceers-2112-ancient-galaxy-looks-strikingly-similar-to-ours/" target="_blank" rel="noreferrer noopener">galaxies</a> evolve together in a common gravitational environment, offering insights into the dynamics and evolution of structures on cosmic scales. 



Image Credit: ESA/Hubble &amp; NASA



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Luminous galaxy NGC 3783 and a blue giant star

Today's Image of the Day from the European Space Agency...

Today's Image of the Day from NASA Earth Observatory features a 9.5-mile section of Pangong Lake on the western end of the Tibetan Plateau. The image was captured on by a crew member onboard the International Space Station.&nbsp;



“In this winter scene, a sheet of cracked ice tops part of the lake,” noted <a href="https://earthobservatory.nasa.gov/" target="_blank" rel="noreferrer noopener">NASA</a>. “On the left side, open water appears blue. Shallow water offshore of a delta, formed by a small, winding river, appears green."



"Parallel lines along the coastlines of bays are visible in the high-resolution version of this image. These lines indicate raised beaches, which formed in the past when lake levels were higher.”



NASA pointed out that several roads cut across the landscape, including one with switchbacks that ascends a steep slope. "These roads facilitate tourist travel from both India and China.”&nbsp;



<h2 class="wp-block-heading" id="h-migratory-birds-at-pangong-lake-nbsp">Migratory birds at Pangong Lake&nbsp;</h2>



Pangong Lake and its surroundings are home to numerous bird species, particularly <a href="https://www.earth.com/news/migratory-birds-burn-unexpected-amounts-of-protein/" target="_blank" rel="noreferrer noopener">migratory birds</a>. Visitors can spot various waterfowl and waders that are rarely seen elsewhere.



“During the summer, species such as bar-headed geese and Brahminy ducks attract bird watchers to the lake, which is a major breeding ground for migrating birds,” said NASA.



Pangong Lake is one of the few places in India where the endangered black-necked crane is found during its breeding season. 



Ruddy shelduck and brown-headed <a href="https://www.earth.com/news/gulls-are-shifting-their-habitats-to-urban-areas/" target="_blank" rel="noreferrer noopener">gulls</a> are also frequently spotted around the lake. The ruddy shelduck is known for its striking orange-brown body and creamy white head, while the brown-headed gulls are often seen flying or swimming in the lake.



<h2 class="wp-block-heading" id="h-pangong-lake-nbsp">Pangong Lake&nbsp;</h2>



Pangong Lake is a stunning high-altitude lake situated in the <a href="https://www.earth.com/news/temperatures-are-rising-unexpectedly-fast-on-the-tibetan-plateau/" target="_blank" rel="noreferrer noopener">Himalayas</a>, extending from India to the Tibetan Autonomous Region of China. It is renowned for its mesmerizing beauty and dramatic setting, with the lake lying at an elevation of about 4,350 meters.



One of the most distinctive features of Pangong Lake is its changing colors, ranging from shades of blue to green and even red, influenced by the sky's reflection and the lake's mineral content.



This saline water lake is approximately 134 kilometers long and 5 kilometers wide at its broadest point. Despite its considerable size, Pangong Lake is relatively shallow. 



The lake gained additional popularity after being featured in several Indian films - most notably the Bollywood hit "3 Idiots." Its remote location requires a permit for visitors, especially due to its proximity to the Line of Actual Control between India and China.



Despite the geopolitical sensitivities surrounding its location, Pangong Lake remains a favorite among tourists for its unparalleled natural beauty and serene environment.



<h2 class="wp-block-heading" id="h-high-altitude-lakes">High-altitude lakes</h2>



High-altitude lakes are unique bodies of water found at elevations typically above 3,000 meters (about 10,000 feet) in mountain ranges like the <a href="https://www.earth.com/news/himalayan-glaciers-retreating-threat-is-much-worse-than-previously-believed/" target="_blank" rel="noreferrer noopener">Himalayas</a>, Andes, and Rockies. 



These lakes are formed either by glacial activity, where glaciers erode the earth to create depressions that fill with melted snow and rainwater, or when natural dams created by landslides or moraines trap water in valleys.



<h3 class="wp-block-heading" id="h-extreme-environments">Extreme environments</h3>



The conditions at high altitudes make these lakes distinct in several ways. The climate is typically colder and harsher, with significant temperature variations between day and night. 



This extreme environment affects both the physical characteristics of the <a href="https://www.earth.com/news/alarming-study-most-of-the-worlds-largest-lakes-are-quickly-losing-water/" target="_blank" rel="noreferrer noopener">lakes</a> and the types of ecosystems they support. For example, due to lower atmospheric pressure, the boiling point of water is reduced, which can affect the type of life that can survive in these regions.



<h3 class="wp-block-heading" id="h-critical-habitats">Critical habitats</h3>



Biologically, high-altitude lakes often have limited biodiversity because only certain types of plants and animals can tolerate the cold temperatures and lower oxygen levels in the water. 



Despite this, these lakes are crucial habitats for some unique species of fish, birds, and other wildlife. They also serve as important indicators of climate change, as variations in their water levels and temperatures can reflect environmental shifts.



<h3 class="wp-block-heading" id="h-significance-of-high-altitude-lakes">Significance of high-altitude lakes </h3>



Lakes at high altitudes are often clear and pristine, due to the low density of human populations in these areas and minimal industrial activity, making them significant for ecological studies and attractive for tourism. 



However, they are sensitive ecosystems, and increased tourist activity brings challenges like pollution and habitat disruption.



High-altitude lakes are not only beautiful and scientifically significant but also hold cultural importance for local communities, often considered sacred and associated with historical and spiritual significance.



Image Credit: NASA Earth Observatory&nbsp;



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Pangong Lake on the Tibetan Plateau

Today's Image of the Day from NASA Earth Observatory features...

Today's Image of the Day from the European Space Agency features the aftermath of devastating floods in the Valencia region of Eastern Spain.&nbsp;



On October 29, 2024, torrential rainfall unleashed nearly a year’s worth of precipitation in just eight hours, leading to catastrophic flash floods that affected a vast area from Málaga to Valencia. 



<h2 class="wp-block-heading" id="h-flash-floods-in-valencia">Flash floods in Valencia </h2>



<a href="https://www.earth.com/news/flash-floods-are-set-to-become-much-more-common-in-the-u-s/">Floodwaters</a> submerged entire neighborhoods and agricultural lands. Many roads and infrastructure were overwhelmed almost instantly, stranding vehicles and prompting widespread evacuations. Water levels rose faster than emergency services could respond.



One resident of Paiporta, near Valencia, told the BBC that when the water started to rise it was "like a tsunami wave."



“In a matter of minutes, flash floods caused by heavy downpours in eastern Spain swept away everything in their path. With no time to react, people were trapped in vehicles, homes and businesses,” reported the Associated Press.



More than 200 people were killed and thousands of people were rescued. According to SOS Desaparecidos, as many as 1,300 people remained unaccounted for on Friday, three days after the floods.



<h2 class="wp-block-heading" id="h-magnitude-of-the-tragedy-nbsp">Magnitude of the tragedy&nbsp;</h2>



Ángel Víctor Torres, the Minister for Territorial Policy and Democratic Memory, said: “The fact that we can’t give a number of the missing persons indicates the magnitude of the tragedy.”&nbsp;



Some areas, including the Spanish town of Alfafar, are completely cut off from communication.&nbsp;



Juan Ramón Adsuara, the mayor of Alfafar, said the aid isn't nearly enough for residents trapped in an "extreme situation."



"There are people living with corpses at home. It's very sad. We are organizing ourselves, but we are running out of everything," Adsuara told reporters. "We go with vans to Valencia, we buy and we come back, but here we are totally forgotten."



<h2 class="wp-block-heading" id="h-government-warning-was-not-issued-in-time">Government warning was not issued in time</h2>



On Tuesday morning, Spain's meteorological agency Aemet warned that torrential rains were forecast for the region of Valencia, before issuing a&nbsp; "maximum red alert.”



Carlos Mazon, Valencia’s regional president, said the government sent out an SMS alert reserved for the “worst possible scenario.” But according to a report from CNN, that alert was sent hours too late.



“By 5 p.m., Valencia’s emergency services were swamped by hundreds of pleas for help throughout the region,” wrote Atika Shubert, a CNN Senior International Correspondent.



“It was at 8 p.m. that cell phones finally buzzed with the public alert telling residents to stay indoors. Much too little, much too late, even for those downstream of the raging water who might otherwise have had time to prepare.”



The BBC also noted that many people have questioned the timing of the government's warning, which arrived more than 12 hours after Aemet issued its first red alert.



<h2 class="wp-block-heading" id="h-extreme-weather-in-a-warming-climate">Extreme weather in a warming climate</h2>



The deadly floods in Valencia were primarily caused by an extreme weather event that brought record-breaking <a href="https://www.earth.com/news/extreme-rainfall-events-are-interconnected-around-the-globe/">rainfall</a>. The intense downpour was fueled by unusually warm Mediterranean Sea temperatures, which increased moisture in the atmosphere and intensified the rainfall.&nbsp;



Climate experts link this phenomenon to climate change, as warmer seas lead to more frequent, severe storms. The combination of heavy rain and the region's limited drainage capacity led to flash flooding, overwhelming local <a href="https://www.earth.com/news/predicting-floods-its-not-just-about-rainfall/">infrastructure</a>.



Rising ocean temperatures are largely driven by increased greenhouse gases that trap more heat in the atmosphere. Oceans absorb about 90% of this excess heat, leading to warmer waters, especially near the surface.&nbsp;



This warming disrupts marine ecosystems, contributing to coral bleaching and altering habitats for species like fish and marine mammals.



With the <a href="https://www.earth.com/news/can-we-outrun-the-flood-risks-of-climate-change/">climate crisis</a> intensifying, experts warn that warmer ocean temperatures will heighten the risk of rapid, destructive rainfall events.



<h2 class="wp-block-heading" id="h-second-deadliest-flood-in-europe-this-century-nbsp">Second-deadliest flood in Europe this century&nbsp;</h2>



Prime Minister Pedro Sanchez said the disaster was the second-deadliest flood in Europe this century and that Spain was carrying out its largest deployment of army and security force personnel in peacetime. The country was sending 5,000 soldiers and 5,000 police officers to the eastern region of Valencia on Saturday.



Four days after the devastating floods, rescuers are still searching for bodies. Thousands of volunteers are helping to clean up the thick mud that covers streets, homes, and businesses in the hardest-hit towns.&nbsp;



Prime Minister Sanchez responded to people who expressed they feel abandoned with no help or communication in the days following the tragic flooding.



“I am aware the response is not enough, there are problems and severe shortages… towns buried by mud, desperate people searching for their relatives.”



"For those who at this moment are still looking for their loved ones, the whole of Spain weeps with you."



According to <a href="https://www.esa.int/">ESA</a>, the Copernicus Emergency Rapid Mapping Service has been activated to provide satellite imagery that can support rescue and recovery efforts.



Image Credit: USGS, processed by ESA&nbsp;



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Valencia floods: A tragedy fueled by extreme weather

Today's Image of the Day from the European Space Agency features a brilliant stellar nursery located about 163,000 light-years away.



According to ESA, the image is one of the most photogenic examples of the many stellar nurseries observed by the NASA/ESA Hubble Space Telescope during its 30-year lifetime. 



“The portrait features the giant nebula NGC 2014 and its neighbor NGC 2020 which together form part of a vast star-forming region in the Large Magellanic Cloud, a satellite galaxy of the Milky Way,” noted <a href="https://www.esa.int/" target="_blank" rel="noreferrer noopener">ESA</a>.



<h2 class="wp-block-heading" id="h-what-is-a-stellar-nursery">What is a stellar nursery?</h2>



Stellar nurseries are regions in space where new stars are <a href="https://www.earth.com/news/baby-stars-release-sneezes-of-gas-and-dust-as-they-develop/" target="_blank" rel="noreferrer noopener">born</a> - often within vast clouds of gas and dust called molecular clouds.&nbsp;



These areas are fascinating because they are cradles of stellar evolution, where gravity causes clumps of gas to collapse, eventually forming protostars.&nbsp;



Over time, the protostars will heat up and start the nuclear fusion process that powers a star.



One of the most well-known stellar nurseries is the Orion Nebula, which is visible to the naked eye and located about 1,350 light-years from Earth.&nbsp;



<h2 class="wp-block-heading" id="h-dynamic-nature-of-a-stellar-nursery-nbsp">Dynamic nature of a stellar nursery&nbsp;</h2>



Within these nurseries, the balance between gravity and pressure determines the types of stars that form, from massive, luminous stars to smaller, cooler ones like our Sun.&nbsp;



The environment is incredibly dynamic, with powerful winds from young stars shaping the clouds and triggering the birth of even more stars.



These regions are often illuminated by the light from massive newborn stars - creating stunning, colorful displays. The light reveals the intricate structure of the dust and gas, sculpted by the energy of young stars.&nbsp;



<h2 class="wp-block-heading" id="h-significance-of-stellar-nurseries-nbsp">Significance of stellar nurseries&nbsp;</h2>



Stellar nurseries are essential for understanding the early stages of planetary formation, as protoplanetary disks (the material from which <a href="https://www.earth.com/news/planet-formation-new-insights-mechanics-physics/" target="_blank" rel="noreferrer noopener">planets form</a>) are often found around young stars in these regions.



Stellar nurseries play a crucial role in the ongoing evolution of <a href="https://www.earth.com/news/black-hole-is-starving-its-host-galaxy-of-star-forming-fuel/" target="_blank" rel="noreferrer noopener">galaxies</a>. They are responsible for the continuous birth of new stars that enrich the interstellar medium with heavier elements. This constant recycling of material is key to the development of future generations of stars and planets.&nbsp;



Furthermore, the study of these regions helps astronomers understand the fundamental processes that govern the life cycles of stars and the overall dynamics of the universe.



<h2 class="wp-block-heading" id="h-the-local-group">The Local Group</h2>



The Local Group is a collection of over 80 galaxies that includes the Milky Way, the Andromeda Galaxy, and the Triangulum Galaxy, along with numerous smaller dwarf galaxies. These galaxies are bound together by gravity and span a region roughly 10 million light-years across.&nbsp;



The <a href="https://www.earth.com/news/milky-ways-thin-disk-is-billions-of-years-older-than-we-thought/" target="_blank" rel="noreferrer noopener">Milky Way</a> and Andromeda are the dominant members, with their respective satellite galaxies orbiting them.&nbsp;



The Local Group is part of a larger structure known as the Virgo Supercluster, and its galaxies are moving toward the gravitational center of the Local Group, contributing to its dynamic nature.&nbsp;



<h2 class="wp-block-heading" id="h-large-magellanic-cloud">Large Magellanic Cloud</h2>



The Large Magellanic Cloud (LMC) is the fourth largest galaxy in the Local Group and can be seen with the naked eye from the Southern Hemisphere.&nbsp;



This irregular dwarf galaxy is home to the Tarantula Nebula, one of the most active star-forming regions in our cosmic neighborhood.&nbsp;



The Large Magellanic Cloud played a key role in astronomical history, particularly when the supernova SN 1987A was observed, providing valuable insights into stellar evolution.&nbsp;



The LMC's interaction with the Milky Way, along with its own companion, the Small Magellanic Cloud, is believed to influence its shape and star formation activity. Its proximity and unique properties make it a crucial object of study for understanding <a href="https://www.earth.com/news/massive-galactic-explosion-provides-clues-about-galaxy-evolution/" target="_blank" rel="noreferrer noopener">galaxy evolution</a>, star formation, and the dynamics of interacting galaxies.



Image Credit: NASA, ESA, and STScI



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Hubble captures a stunning stellar nursery

Today's Image of the Day from the European Southern Observatory (ESO) features the Dark Wolf Nebula, located around 5,300 light-years from Earth in the constellation Scorpius.



According to ESO, this image of the dark <a href="https://www.earth.com/news/scientists-reveal-the-ring-nebula-as-it-has-never-been-seen-before/" target="_blank" rel="noreferrer noopener">nebula</a> creates the illusion of a wolf-like silhouette against a colorful cosmic backdrop. 



“This image takes up an area in the sky equivalent to four full Moons, but is actually part of an even larger nebula called Gum 55. If you look closely, the wolf could even be a werewolf, its hands ready to grab unsuspecting bystanders,” noted <a href="https://www.eso.org/public/" target="_blank" rel="noreferrer noopener">ESO</a>.



<h2 class="wp-block-heading" id="h-dark-nebulae-nbsp">Dark nebulae&nbsp;</h2>



Dark nebulae are dense regions in space filled with gas and dust that absorb visible light, making them appear as dark patches against brighter backgrounds.&nbsp;



Unlike emission or reflection nebulae, dark nebulae do not glow on their own. Instead, they obstruct and obscure the light from stars and other objects lying behind them.&nbsp;



This characteristic makes them challenging to observe using visible-light telescopes, as they absorb and scatter light rather than reflecting or emitting it.&nbsp;



However, when viewed in infrared, where their obscuring effect is reduced, dark nebulae reveal intricate details about the <a href="https://www.earth.com/news/building-blocks-of-life-found-in-the-perseus-cloud/" target="_blank" rel="noreferrer noopener">molecular clouds</a> they contain.



According to ESO, astronomers study these clouds of frozen dust because they often contain new stars in the making.



<h2 class="wp-block-heading" id="h-dark-wolf-nebula-nbsp">Dark Wolf Nebula&nbsp;</h2>



The Dark Wolf Nebula is part of a larger complex known as the Lupus Molecular Cloud, one of several significant star-forming regions close to Earth.&nbsp;



Inside of dark nebulae, the conditions are prime for star formation. The dense gas and dust clump together under gravitational forces, and as the clouds contract, they heat up, eventually igniting nuclear fusion and forming <a href="https://www.earth.com/news/new-molecule-detected-in-space-where-stars-are-born/" target="_blank" rel="noreferrer noopener">new stars</a>.



The Dark Wolf Nebula is known for revealing young, low-mass stars, or T Tauri stars, which are in the early stages of their evolution. These stars are still surrounded by disks of material that may eventually form new planets.



This nebula is typically studied in infrared, which allows scientists to look beyond the obscuring dust to observe the processes of star formation.&nbsp;



<h2 class="wp-block-heading" id="h-the-constellation-scorpius-nbsp">The constellation Scorpius&nbsp;</h2>



Scorpius is one of the most recognizable constellations in the sky. It resembles a scorpion with a long, curved tail and stinger.&nbsp;



Located in the southern sky, Scorpius is especially visible during the summer months in the Northern Hemisphere and winter in the Southern Hemisphere.&nbsp;



The constellation is often associated with the story of Orion in Greek mythology. According to legend, the scorpion was sent by the goddess Artemis to kill Orion, the great hunter, either as punishment for his arrogance or to protect her animals, depending on the version of the tale.&nbsp;



The gods later placed both <a href="https://www.earth.com/news/orion-nebula-destroys-an-oceans-worth-of-water-every-month/" target="_blank" rel="noreferrer noopener">Orion</a> and Scorpius in the sky, but in opposite parts of the heavens so they would never be seen together - as Scorpius rises in the east and Orion sets in the west.



Scorpius contains several notable stars and deep-sky objects. Its brightest star, Antares, is a red supergiant often referred to as the "Heart of the Scorpion" due to its reddish hue and central position.&nbsp;



Antares is one of the largest visible stars in the sky and has a luminosity tens of thousands of times greater than that of our Sun.&nbsp;



Scorpius is located close to the core of the Milky Way, making it a rich region for star clusters and nebulae. Among these are the Butterfly Cluster and the Ptolemy Cluster, both of which are visible to the naked eye under dark skies.



<h2 class="wp-block-heading" id="h-image-of-the-dark-wolf-nebula">Image of the Dark Wolf Nebula </h2>



“This image shows in spectacular detail how the dark wolf stands out against the glowing star-forming clouds behind it,” noted ESO.



“The colorful clouds are built up mostly of hydrogen gas and glow in reddish tones excited by the intense UV radiation from the newborn stars within them.”



The picture was created from images taken at different times. Each of the images has a filter that makes a different color of light visible.&nbsp;



Observations of the Dark Wolf Nebula provide astronomers with valuable information about the <a href="https://www.earth.com/news/massive-star-redefines-our-understanding-of-stellar-evolution/" target="_blank" rel="noreferrer noopener">evolution of stars</a> and the environments in which they form.



The image was captured by the VLT Survey Telescope (VST) at ESO’s Paranal Observatory in Chile.



Image Credit: ESO/VPHAS+ team



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Dark Wolf Nebula in the constellation Scorpius

Today's Image of the Day from the European Southern Observatory...

Not long ago, the common belief was that only a subset of media consumers - often less educated and highly biased - would let their political allegiance override the truth. They would believe the news that favors their political inclinations, even if it wasn't authentic.



Then some intriguing studies emerged which indicated quite the opposite. The research suggested that media consumers across the spectrum value truth over partisanship.



The studies proclaimed that the authenticity of news was more influential than its alignment with a consumer's political views by more than four times.



However, as we stand on the brink of a national election fraught with misinformation, a fresh study shakes this understanding to its core.



<h2 class="wp-block-heading" id="h-news-and-political-views">News and political views</h2>



The research, led by top psychology scholars at Stanford University, suggests that the masses tend to prioritize partisanship over truth when <a href="https://www.earth.com/news/political-views-change-our-perception-of-the-past-and-future/" target="_blank" rel="noreferrer noopener">consuming news</a>.



Quite unexpectedly, this behavioral pattern spans across all political orientations, educational backgrounds, and reasoning capabilities.



Study lead author Michael Schwalbe is a postdoctoral scholar in the Department of Psychology at the School of Humanities and Sciences at <a href="http://www.stanford.edu/" target="_blank" rel="noreferrer noopener">Stanford University</a>.



"We saw an effect of people being more influenced by political alignment than truth," said Schwalbe. 



"We saw it on both political sides and even among people who scored well on a reasoning test. We were a bit surprised to see how widespread this tendency was. People were engaging in a lot of resistance to inconvenient truths."



<h2 class="wp-block-heading" id="h-pervasive-problem-across-political-parties">Pervasive problem across political parties</h2>



The researchers unearthed intriguing ways in which political views and partisanship can impact the analysis of news. 



In one measure of bias, people's beliefs about the impartiality of their political side compared to their rivals were assessed. Ironically, those who were most confident in their side's neutrality were the most biased.



Furthermore, partisanship seemed to have a more robust effect on <a href="https://www.earth.com/news/climate-change-opinions-swing-voting-and-elections-in-the-u-s/" target="_blank" rel="noreferrer noopener">processing real news</a> than fake news. People demonstrated a higher propensity to reject true information that challenged their political views and accept false information that supported their ideological stances.



"Everyone thinks it's the other person who is the problem," said Geoffrey L. Cohen, the James G. March Professor of Organizational Studies in Education and Business, professor of psychology in H&amp;S, and senior author of the study. 



"People say, 'Not me!' But it turns out, like with a lot of social psychological research, it's actually a pretty pervasive problem across political parties and up and down the educational ladder. The problem isn't just misinformation but the filters of our own mind - perhaps more so."



<h2 class="wp-block-heading" id="h-news-sources-and-political-beliefs">News sources and political beliefs</h2>



The study is based on research conducted on a sample of the voting-age U.S. population, matched to the demographics of the census. This group included supporters and opponents of former President Donald Trump.



A distinctive aspect of this research is its deviation in methodology from previous studies. According to Cohen, this could be why the findings contradict them. While the other studies used existing news headlines, this research involved fabricated ones.



Also, in prior investigations, subjects could see the news sources, which may have influenced their acceptance or rejection of the information, whereas this study focused on the headlines alone.



<h2 class="wp-block-heading" id="h-the-role-of-headlines">The role of headlines</h2>



The research team conjured fake headlines like "Trump Beats Grandmaster Chess Champion" and "Trump Attended Private Halloween Gala with Sex Orgies Dressed as the Pope." 



Surprisingly, the experts discovered that Trump's supporters and opponents were more likely to believe headlines that aligned with their views than to accept <a href="https://www.earth.com/news/cities-are-largely-unprepared-for-the-effects-of-climate-change/" target="_blank" rel="noreferrer noopener">true headlines</a> that opposed their beliefs.



The researchers suggest that one contributing factor for this situation is the increased consumption of partisan media. 



"We found that the strongest predictors of bias include extreme views of Trump, a one-sided media diet, and belief in the objectivity and lack of bias of a person's own political side relative to the other side," Schwalbe said.



<h2 class="wp-block-heading" id="h-growing-concern-about-news-consumption">Growing concern about news consumption </h2>



The findings of this study underscore concerns about news consumption in the 21st century, especially with the advent of social media and the constant availability of political news. 



Gaining access to one-sided information has become easier, which can reinforce beliefs in personal objectivity and lead to deepened polarization over time.



<h2 class="wp-block-heading" id="h-possible-paths-to-improvement">Possible paths to improvement</h2>



Having identified the problem, the next logical step is to propose interventions. A measure suggested by Cohen, known as "pre-bunking," involves proactive fact-checking where media sources warn of potential misinformation, or people independently learn to recognize manipulation tactics.



However, Cohen and Schwalbe emphasized that the solution doesn't solely lie in policy changes focused on fake news; people are also biased in their disbelief of true news.



Accordingly, they highlight the significance of promoting intellectual humility, wherein media consumers acknowledge the fallibility of their minds and learn to question their perceptions.



"There's still much more to do to understand the problem," said Schwalbe. So, while this study forms a solid foundation for further exploration, there's no denying that we're only at the beginning of this investigative journey.



The study is published in the <a href="https://psycnet.apa.org/fulltext/2025-33892-004.html" target="_blank" rel="noreferrer noopener">Journal of Experimental Psychology: General</a>. 



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People trust news that matches their political views, even when it's fake

Not long ago, the common belief was that only a...

The cooperative behavior of bees, resembling a singular "superorganism," is something uniquely remarkable in the world of nature.



It is not uncommon for thousands of worker bees to function collectively to protect the colony, feed it, and look after the offspring. This intricate social conduct unifies their individual actions into a concerted effort.



But how is this complex behavior encoded and inherited among generations of <a href="https://www.earth.com/news/honey-bees-spread-viruses-to-bumblebees-in-the-spring/" target="_blank" rel="noreferrer noopener">honey bees</a>? The answer lies in a special gene, as unveiled by a team of scientists.



The research was led by experts at Heinrich Heine University Düsseldorf (<a href="https://www.hhu.de/en/" target="_blank" rel="noreferrer noopener">HHU</a>), along with colleagues from Frankfurt/Main, Oxford, and Würzburg. The study has uncovered the genetic underpinnings of honey bee cooperation.



<h2 class="wp-block-heading" id="h-genes-behind-cooperative-bee-behavior">Genes behind cooperative bee behavior</h2>



The principal investigator and the head of the Institute of Evolutionary Genetics at Heinrich-Heine University, Dr. Martin Beye, and his team have made this breakthrough discovery. The research was focused on a gene called "doublesex" or "dsx."



"The behavioral repertoire of the individual bees and their function in the <a href="https://www.earth.com/news/honey-bee-colonies-are-collapsing-as-climate-change-progresses/" target="_blank" rel="noreferrer noopener">colony</a> are not learned, but rather inherited. Until now, it was not known how such complex behaviors were genetically encoded," said Dr. Beye.



The key discovery is that the dsx gene influences worker bee-specific behavior, noted study first author Dr. Vivien Sommer.



"The gene programs whether a worker bee takes up a task in the colony and for how long. This includes collective tasks such as caring for the larvae or foraging for food and social exchanges on food sources, for example," said Dr. Sommer. 



<h2 class="wp-block-heading" id="h-gene-editing-in-bees">Gene editing in bees</h2>



The team used the CRISPR/Cas9 gene-editing technique to modify the dsx gene in select bees, attaching a QR code to the manipulated bees.



Cameras inside the hive monitored the bees' behavior, and with the assistance of artificial intelligence, video sequences were analyzed to determine individual behavioral patterns.



"Our central question was whether and how the inherited behavioral patterns changed as a result of the gene modification. Such changes must be reflected in the nervous system of the worker bees where the specific behaviour is controlled," said Dr. Sommer.



Adding a twist, the researchers introduced a green fluorescent protein (GFP) into the dsx sequence to visualize the neuronal circuits. 



They found that the dsx gene plays a crucial role in creating specific neural pathways in the <a href="https://www.earth.com/news/study-explores-the-basis-of-social-behavior-in-the-insect-brain/" target="_blank" rel="noreferrer noopener">bee’s brain</a>, according to doctoral researcher Jana Seiler, who is also a co-author of the study.



<h2 class="wp-block-heading" id="h-new-chapter-in-bee-behavior">New chapter in bee behavior </h2>



"Our findings indicate a fundamental genetic program that determines the neuronal circuitry and behavior of worker bees," said Dr. Wolfgang Rössler, an expert in the Department of Behavioural Physiology and Sociobiology at the University of Würzburg.



The next challenge is to move from the individual honeybee to the whole bee colony and understand how the gene influences the “superorganism.” 



"We hope to find the link between individual programming and the coordinated behaviour of many individuals," said Alina Sturm, a doctoral researcher at HHU.



Revealing the genetic secret behind the collective behavior of honey bees is more than just a scientific breakthrough. It’s a tribute to the remarkable complexity of nature and its infinite capacity for surprise. 



<h2 class="wp-block-heading" id="h-broader-implications-of-bee-behavior">Broader implications of bee behavior</h2>



The discovery of a gene that influences honey bee behavior has implications beyond the study of bees.



Understanding how a <a href="https://www.earth.com/news/a-single-gene-allows-cape-honey-bees-to-reproduce-asexually/" target="_blank" rel="noreferrer noopener">single gene</a> can shape complex social dynamics could inspire innovations in fields such as robotics and artificial intelligence.



For example, roboticists often look to nature for insights into building more efficient, cooperative systems. The hive’s "superorganism" structure could serve as a model for developing autonomous swarm robots designed to work together toward a shared goal.



Additionally, the study of bee cooperation offers valuable insights for ecology and conservation. 



Honey bees play a critical role in pollination. Identifying the genetic foundations of their social behavior could lead to better strategies for supporting bee populations amid environmental threats.



By shedding light on the inner workings of the hive, this research adds a new dimension to preserving biodiversity and maintaining the stability of ecosystems that rely heavily on <a href="https://www.earth.com/news/world-honey-bee-day-protecting-our-vital-pollinators/" target="_blank" rel="noreferrer noopener">pollinators</a>.



The study is published in the journal <a href="https://www.science.org/doi/10.1126/sciadv.adp3953?adobe_mc=MCMID%3D91765132952246405812279585398434020131%7CMCORGID%3D242B6472541199F70A4C98A6%2540AdobeOrg%7CTS%3D1730680771" target="_blank" rel="noreferrer noopener">Science Advances</a>.



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Bees do not learn to be cooperative - it is in their genes

The cooperative behavior of bees, resembling a singular "superorganism," is...

The Big Bang theory describes a mind-blowing event that took place around 14 billion years ago. The observable universe expanded from the size of a minuscule bacterium to the mammoth dimensions of the Milky Way, all within a fraction of a second. 



According to currently accepted theory, this early universe was a hot, dense environment. So, how do we know this massive <a href="https://www.earth.com/news/new-observations-disprove-big-bang-theory-universe-began-tired-light-theory/" target="_blank" rel="noreferrer noopener">cosmic event</a> actually happened?



Much of what we know comes from evidence collected in the last century. In the late 1920s, American astronomer Edwin Hubble found that galaxies are moving away from each other, leading to the idea that our universe is always expanding. 



If we <a href="https://www.earth.com/news/study-dark-matter-does-not-exist-and-the-universe-is-27-billion-years-old/" target="_blank" rel="noreferrer noopener">trace this expansion back</a>, we discover a universe that is as old as the oldest astronomical objects we see.



<h2 class="wp-block-heading" id="h-believers-and-skeptics-of-big-bang-theory">Believers and skeptics of Big Bang theory</h2>



Initially, this radical idea was met with skepticism. Interestingly, it was a skeptic, an Englishman named Fred Hoyle, who facetiously dubbed this hypothesis as the "Big Bang" during a <a href="https://www.bbc.com" target="_blank" rel="noreferrer noopener">BBC</a> radio interview in 1949.



The tune of skepticism began to change when, in 1964, Arno Penzias and Robert Wilson detected cosmic microwave background (CMB) radiation -- an afterglow of the Big Bang that filled all space.



This discovery, which earned them the 1978 Nobel Prize in Physics, opened a window into the hot, dense <a href="https://www.earth.com/news/gravitational-waves-dark-matter-big-bang-breakthrough/" target="_blank" rel="noreferrer noopener">beginning of our universe</a>.



<h2 class="wp-block-heading" id="h-first-moments-after-the-big-bang">First moments after the Big Bang</h2>



Over the years, experiments at particle accelerators like the <a href="https://www.earth.com/news/higgs-boson-god-particle-still-remains-quantum-mystery-after-12-years/" target="_blank" rel="noreferrer noopener">Large Hadron Collider</a> have shed light on <a href="https://www.earth.com/news/origins-of-matter-discovered-by-recreating-the-big-bang/" target="_blank" rel="noreferrer noopener">conditions that existed</a> closer to the time of the Big Bang.



Our understanding of physics at these high energies suggests that the four fundamental forces of physics we recognize now were initially unified as a single force.



What are these four forces? We know them as <a href="https://www.earth.com/news/theory-gravity-exists-without-mass-so-dark-matter-does-not-exist/" target="_blank" rel="noreferrer noopener">gravity</a>, <a href="https://www.earth.com/news/lightning-sparks-the-discovery-of-a-new-electromagnetic-wave/" target="_blank" rel="noreferrer noopener">electromagnetism</a>, and the strong and weak nuclear forces. 



As our universe expanded and cooled down, it underwent dramatic changes, known as phase transitions, splitting these forces.



Experiments suggest that a <a href="https://www.earth.com/news/microscopic-primordial-black-holes-may-explain-all-dark-matter-in-universe/" target="_blank" rel="noreferrer noopener">few billionths of a second</a> after the Big Bang, the breakdown of electroweak unification took place. 



This was when electromagnetism and the weak nuclear force separated, leading to all matter in the universe acquiring its mass.



<h2 class="wp-block-heading" id="h-universe-s-primordial-soup">Universe’s primordial soup</h2>



Our walk through the early universe reveals a world filled with a peculiar substance called quark-gluon plasma. 



As its name suggests, this 'primordial soup' consisted of <a href="https://www.earth.com/news/gluons-quarks-and-mystery-what-makes-proton-spin/" target="_blank" rel="noreferrer noopener">quarks and gluons</a>, sub-atomic particles responsible for the strong nuclear force. This plasma didn't last long, though.



<figure class="wp-block-image aligncenter size-full"><a href="https://www.earth.com/wp-content/uploads/2024/11/big-bang-theory_graphic-illustration_1m.jpg" target="_blank" rel="noreferrer noopener"><img src="https://www.earth.com/wp-content/uploads/2024/11/big-bang-theory_graphic-illustration_1s.jpg" alt="Infographic explaining the Big Bang theory and how it resulted in the universe that we see today." class="wp-image-1949475"/></a><figcaption class="wp-element-caption">Infographic explaining the Big Bang theory and how it resulted in the universe that we see today.</figcaption></figure>



A few millionths of a second post-Big Bang, as the <a href="https://www.earth.com/news/origins-of-matter-discovered-by-recreating-the-big-bang/" target="_blank" rel="noreferrer noopener">universe</a> expanded and cooled, quarks and gluons clumped together to form protons and neutrons, the building blocks of atoms. This event is referred to as quark confinement.



<h2 class="wp-block-heading" id="h-big-bang-nucleosynthesis">Big Bang nucleosynthesis</h2>



With fewer high energy photons in the universe, the process called <a href="https://www.earth.com/news/new-study-claims-our-universe-is-27-billion-years-old-double-the-current-age-estimate/" target="_blank" rel="noreferrer noopener">Big Bang nucleosynthesis</a> (BBN) kicked in. This was when the first atomic nuclei -- dense lumps of matter made from protons and neutrons -- formed.



Once, the higher amount of high energy photons would have quickly destroyed any <a href="https://www.earth.com/news/atomic-nucleus-made-of-quarks-and-gluons-reproduced-for-the-first-time/" target="_blank" rel="noreferrer noopener">atomic nuclei</a>, but with fewer of them around, BBN could take place. 



The fusion reactions stopped just a few minutes after the Big Bang, but their effects are observable to this day.



<h2 class="wp-block-heading" id="h-big-bang-theory-and-the-singularity">Big Bang theory and the singularity</h2>



Penetrating further into our cosmic past, we reach an intriguing period where there's no evidence for what existed before the breakdown of electroweak unification. 



The energy density at this point was so high that our mathematical equations fumble and become nonsensical. This period is known as a singularity.



In the 1960s, two British theoretical physicists, Stephen Hawking and Roger Penrose, presented a series of mathematical theorems suggesting that the universe's spacetime must end at a singularity in the past -- the Big Bang singularity.



While Penrose received the Nobel Prize in 2020, Hawking, who passed away in 2018, was not eligible for this posthumous honor.



According to these theories, <a href="https://www.earth.com/news/matter-spacetime-gravitational-waves-fabric-of-the-universe/" target="_blank" rel="noreferrer noopener">space and time</a> appear at the Big Bang singularity, suggesting there is no 'before' the Big Bang. So, in scientific terms, the Big Bang is the dawn of time.



<h2 class="wp-block-heading" id="h-quantum-quandary-of-big-bang-theory">Quantum quandary of Big Bang theory</h2>



Despite its accuracy in a vast majority of cases, the theory of <a href="https://www.earth.com/news/radical-new-theory-finally-unites-gravity-spacetime-and-the-quantum-realm/" target="_blank" rel="noreferrer noopener">general relativity</a> fails to describe <a href="https://www.earth.com/news/impossible-quantum-effects-observed-atoms-positioned-closely-together/" target="_blank" rel="noreferrer noopener">atoms</a>, <a href="https://www.earth.com/news/t-coronae-borealis-nova-explosion-nearby-star-light-up-earths-skies/" target="_blank" rel="noreferrer noopener">nuclear fusion</a>, or radioactivity. These phenomena are instead explained by quantum theory.



Quantum theory differs from its classical counterparts, such as relativity, by being probabilistic. While classical theories are deterministic and predict a definite outcome from certain initial conditions, quantum theory assigns a probability to <a href="https://www.earth.com/news/quantum-entanglement-a-simple-way-to-grasp-this-impossible-concept-carl-kocher/" target="_blank" rel="noreferrer noopener">multiple possible outcomes</a>.



Gravity is one such area where the classical description falls short, especially when spacetime curvature is extreme, near a singularity. 



During these extreme conditions, the <a href="https://www.earth.com/news/central-theory-of-quantum-gravity-is-modeled-in-the-laboratory/" target="_blank" rel="noreferrer noopener">quantum nature of gravity</a> surfaces, making spacetime more like the fibers and threads of a carpet seen up close -- gnarly, not smooth.



Close to the Big Bang singularity, the structure of spacetime ceases to be smooth. Mathematical theorems suggest that spacetime is overwhelmed by gnarly features, or spacetime foam. 



In spacetime foam, causality does not apply, making the question "why did the Big Bang occur?" meaningless. Events do not need a cause to occur.



<h2 class="wp-block-heading" id="h-universe-born-out-of-chaos">Universe born out of chaos</h2>



To understand the physics at a singularity like the Big Bang, we need a theory explaining the <a href="https://www.earth.com/news/quantum-particles-solution-gravitational-wave-mystery-bose-einstein-condensate/" target="_blank" rel="noreferrer noopener">quantum behavior of gravity</a>. 



But efforts to formulate one, such as loop quantum gravity and <a href="https://www.earth.com/news/consciousness-may-stem-from-unseen-dimensions-beyond-our-reality/" target="_blank" rel="noreferrer noopener">string theory</a>, are still in their infancy, rendering spacetime foam an enigma.



However, the theory of cosmic inflation, introduced by Alexei Starobinsky and Alan Guth, might provide some answers. 



Inflation is a period of accelerated expansion in the early universe. As difficult as it may be to comprehend, it explains why our universe is large, uniform, and spatially flat.



"I usually describe inflation as a theory of the 'bang' of the Big Bang: It describes the propulsion mechanism that we call the Big Bang," explained Alan Guth.



<h2 class="wp-block-heading" id="h-what-does-all-of-this-mean">What does all of this mean?</h2>



To sum it all up, according to a well-accepted theory called the Big Bang, the story of our universe begins with a cataclysmic explosion roughly 14 billion years ago. 



This explosion kickstarted a period of explosive expansion, called <a href="https://www.earth.com/news/nasa-telescope-will-reveal-the-universe-in-more-than-100-colors/" target="_blank" rel="noreferrer noopener">cosmic inflation</a>. The events before inflation remain a mystery. Is it a spacetime singularity, or is it spacetime foam? The answer is still largely unknown.



We know, or at least what we think we know, is that our universe was born from <a href="https://www.earth.com/news/visible-matter-dark-matter-evolved-together-big-bang/" target="_blank" rel="noreferrer noopener">chaos</a> and has evolved over billions of years into the organized cosmos we see today. 



We still have a lot to learn, but we've come a very long way in a relatively short period of time. 



Rather than beat ourselves up that we still don't know the "why" part of the question, let's just enjoy the ride and never stop seeking the answer to the ultimate question: How did it all begin?



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If the Big Bang theory is correct, what exactly happened?

The Big Bang theory describes a mind-blowing event that took...

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Today’s Video of the Day from the <a href="https://www.jpl.nasa.gov/">NASA Jet Propulsion Laboratory</a> features some tips for skywatchers in August 2022. 



The morning quartet of planets will come to an end in August &#8211; with Venus and Saturn making their exits on opposite sides of the sky. Mars and Jupiter, however, will remain visible.&nbsp;



&#8220;The daily parade of four naked-eye planets in the mornings comes to an end this month. But there are still lots of great highlights, especially if you have access to binoculars,&#8221; says NASA. &#8220;Plus, Saturn and Jupiter are returning to nighttime skies!&#8221;&nbsp;



&#8220;The outlook for the Perseid meteors isn&#8217;t great due to a full moon on the peak night of August 12, but still it&#8217;s worth keeping an eye out for early Perseids after midnight the week before. And August is a great month to learn an easy-to-spot constellation – Cygnus the swan.&#8221;



Video Credit: NASA JPL



&#8211;&#8212;



By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

NASA reveals what you can find in the August sky