<p>Today's <strong>Image of the Day</strong> from the European Space Agency features the star-forming region NGC 604, which is located 2.73 million light-years away from Earth in the Triangulum Galaxy (M33). The image was captured by the James Webb Space Telescope.</p>



<p>By studying regions like NGC 604, astronomers can gain insights into the complex interactions between stars and the interstellar medium, as well as the conditions that lead to the birth of stars. This, in turn, helps in understanding the evolution of <a href="https://www.earth.com/news/galaxies-like-our-own-milky-way-are-not-unique/" target="_blank" rel="noreferrer noopener">galaxies</a> and the universe as a whole.</p>



<h2 class="wp-block-heading" id="h-massive-stars-of-ngc-604">Massive stars of NGC 604</h2>



<p>"Sheltered among NGC 604’s dusty envelopes of gas are more than 200 of the hottest, most massive kinds of stars, all in the early stages of their lives," said <a href="https://www.esa.int/" target="_blank" rel="noreferrer noopener">ESA</a>.</p>



<p>"These types of stars are known as B-types and O-types, the latter of which can be more than 100 times the mass of our own Sun. It’s quite rare to find this concentration of them in the nearby universe. In fact, there’s no similar region within our own Milky Way galaxy."</p>



<p>According to ESA, this concentration of massive stars, combined with its relatively close distance, means NGC 604 gives astronomers an opportunity to study these objects at a fascinating time early in their life.</p>



<h2 class="wp-block-heading" id="h-gigantic-region-of-ionized-hydrogen">Gigantic region of ionized hydrogen</h2>



<p>NGC 604 is one of the largest known regions of ionized hydrogen, also known as an H II region. This nebula is significantly larger than the Orion Nebula, which is one of the most well-known H II regions in our own <a href="https://www.earth.com/news/large-amount-of-dark-matter-may-be-missing-from-the-milky-way/" target="_blank" rel="noreferrer noopener">Milky Way galaxy</a>.&nbsp;</p>



<p>NGC 604 spans about 1,500 light-years across, making it one of the largest H II regions in the Local Group of galaxies. This group includes the Milky Way, the Andromeda Galaxy, and about 54 other smaller galaxies. </p>



<h2 class="wp-block-heading" id="h-ngc-604-starburst-phenomenon">NGC 604 starburst phenomenon </h2>



<p>Within NGC 604, there are hundreds of young, hot, massive <a href="https://www.earth.com/news/stars-at-the-edge-of-our-milky-way-galaxy-travel-more-slowly/" target="_blank" rel="noreferrer noopener">stars</a>. These stars have ionized the surrounding gas, causing it to glow and creating the nebula. The region is a prime example of a starburst phenomenon, where stars form at a much higher rate than in typical galactic conditions.</p>



<p>“The bright orange streaks in this image signify the presence of carbon-based molecules known as polycyclic aromatic hydrocarbons, or PAHs," explained ESA.</p>



<p>"As you travel further from the immediate cavities of dust where the star is forming, the deeper red signifies molecular hydrogen. This cooler gas is a prime environment for star formation. Ionized hydrogen from ultraviolet radiation appears as a white and blue ghostly glow."</p>



<h2 class="wp-block-heading" id="h-more-about-star-formation">More about star formation </h2>



<p>Star formation is crucial for the evolution of galaxies and the synthesis of heavy elements. In the cores of stars, elements heavier than helium are created.</p>



<p>The elements are spread throughout the <a href="https://www.earth.com/news/ancient-stars-shakti-shiva-shaped-milky-way-galaxy/" target="_blank" rel="noreferrer noopener">galaxy</a> when stars reach the end of their lives and expel their material - either gently through winds or violently via supernova explosions. This enriching process allows for the formation of new stars and planets, and ultimately, the potential for life.</p>



<h3 class="wp-block-heading">Cloud collapse</h3>



<p>The process begins when part of a molecular cloud becomes unstable and starts to collapse under its own gravity. This can be triggered by events like shock waves from nearby <a href="https://www.earth.com/news/supernova-explosions-could-damage-distant-planets/" target="_blank" rel="noreferrer noopener">supernovae</a>, galactic collisions, or the influence of other massive stars.</p>



<h3 class="wp-block-heading">Formation of a protostar</h3>



<p>As the cloud collapses, it fragments into smaller clumps. Each clump will eventually form one or more stars. </p>



<p>The material within these clumps continues to fall inward, heating up as it does so, eventually forming a warm core called a protostar. At this stage, the protostar is not yet hot enough for nuclear fusion (the process that powers stars) to occur.</p>



<h3 class="wp-block-heading">Accretion disk</h3>



<p>Around the protostar, material from the surrounding cloud continues to fall inward, forming a rotating disk. This material slowly accretes onto the protostar, increasing its mass.</p>



<h3 class="wp-block-heading">Nuclear fusion begins</h3>



<p>Once the core of the protostar reaches a high enough temperature and pressure, hydrogen atoms begin to fuse into helium, releasing energy in the process. This marks the transition from a protostar to a main sequence star, like our sun.</p>



<h3 class="wp-block-heading">Main sequence and beyond</h3>



<p>The star will spend the majority of its life in the main sequence stage, where it balances the gravitational forces trying to collapse it and the outward pressure from nuclear fusion. </p>



<p>Eventually, the star will exhaust its hydrogen fuel. Its subsequent evolution will depend on its initial mass, leading to various end stages such as red giants, supernovae, neutron stars, or black holes.</p>



<p>Image Credit: NASA/ESA/CSA James Webb Space Telescope</p>



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Young, massive stars in the Triangulum Galaxy

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

<p>Today's <strong>Image of the Day</strong> from NASA Earth Observatory features the Ruki River in the Democratic Republic of the Congo (DRC). It is a tributary of the Congo River, one of the largest rivers in the world by discharge and depth.&nbsp;</p>



<p>The Ruki River, previously known as the Busira, merges with the Momboyo River near the town of Basankusu to become the Lulonga River, which eventually flows into the Congo River at the town of Lisala.</p>



<h2 class="wp-block-heading" id="h-dark-waters-of-the-ruki-river">Dark waters of the Ruki River</h2>



<p>"If the appearance of the muddy Amazon River evokes a coffee cut with cream, the Ruki River, coursing gently through the Congo Basin, is like a dark tea," said <a href="https://earthobservatory.nasa.gov/" target="_blank" rel="noreferrer noopener">NASA</a>.</p>



<p>"On its slow path through mostly untouched lowland rainforest in the Democratic Republic of Congo (DRC), the water leaches organic material from vegetation, prompting some researchers to think it is one of the darkest blackwater rivers on Earth."</p>



<p>According to NASA, scientists are finding that the dissolved material in this distinctive water offers clues about the carbon cycle of tropical forests.</p>



<h2 class="wp-block-heading" id="h-organic-compounds-in-the-ruki-river">Organic compounds in the Ruki River</h2>



<p>In a recent study, researchers measured the chemical <a href="https://www.earth.com/news/warmer-rivers-keep-antimicrobial-resistant-genes-at-bay/" target="_blank" rel="noreferrer noopener">composition</a> and flow of the Ruki for the first time.&nbsp;</p>



<p>"The study reported that, as the water color suggests, the Ruki is rich in dissolved organic carbon compounds," said NASA.</p>



<p>"It contains four times as much organic carbon as the Congo River and 1.5 times as much as the Rio Negro, the world’s largest blackwater river and a major tributary of the Amazon."</p>



<p>Due to this heavy carbon load, the researchers concluded that tropical forests like those around the Ruki might not accumulate quite as much carbon as we once thought.</p>



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



<p>The river is vital for the livelihoods of local communities. <a href="https://www.earth.com/news/fishing-communities-cooperate-to-survive-climate-change/" target="_blank" rel="noreferrer noopener">Fishing</a> is a crucial activity, with many people depending on it for sustenance and income. The river also supports agriculture along its banks, where communities grow crops.</p>



<p>In many parts of the DRC, <a href="https://www.earth.com/news/rivers-are-warming-up-and-losing-oxygen-faster-than-oceans/" target="_blank" rel="noreferrer noopener">rivers</a> like the Ruki are crucial transportation corridors due to the challenging and often nonexistent road infrastructure. </p>



<p>The river enables the movement of people and goods, facilitating trade and access to markets, health care, and education.</p>



<h2 class="wp-block-heading" id="h-wildlife-of-the-ruki-river">Wildlife of the Ruki River </h2>



<p>The region around the Ruki River is home to diverse wildlife. It is part of the Congo Basin, the second-largest tropical rainforest area in the world, which is a critical habitat for endangered species.</p>



<p>Among the most notable species are elephants and <a href="https://www.earth.com/news/study-mean-chimpanzees-fare-better-in-life-than-nice-ones/" target="_blank" rel="noreferrer noopener">chimpanzees</a>, whose populations thrive in the surrounding forests. Other primates such as bonobos also live in this region, making it a critical area for primate conservation.</p>



<p>The river itself is home to various species of fish that are crucial to local livelihoods. Hippopotamuses and crocodiles are often found in the water.</p>



<p>Birds like kingfishers, herons, and egrets frequent the riverbanks - making it a haven for birdwatchers.</p>



<p>The Ruki River also supports several species of reptiles and amphibians - some of which are unique to the region.</p>



<h2 class="wp-block-heading" id="h-managing-the-river-s-resources">Managing the river's resources </h2>



<p>The region faces several challenges, including <a href="https://www.earth.com/news/global-deforestation-directly-linked-to-atmospheric-mercury-emissions/" target="_blank" rel="noreferrer noopener">deforestation</a>, overfishing, and environmental degradation, which threaten its ecological balance and the livelihoods of people who depend on it. </p>



<p>Efforts to manage and conserve the river's resources are vital for sustainable development.</p>



<p>Understanding and protecting the Ruki River and its surroundings are crucial for the DRC's environmental sustainability, economic development, and the well-being of its communities.</p>



<h2 class="wp-block-heading" id="h-landscapes-of-the-drc">Landscapes of the DRC</h2>



<p>The Democratic Republic of Congo (DRC) boasts some of the most diverse and breathtaking landscapes in Africa, reflecting its vast size and ecological richness. Dominated by the Congo Basin, the country is a haven for biodiversity.</p>



<p>Beyond its rainforests, the DRC's landscapes shift dramatically. In the east, the terrain rises into rugged mountains, including the Virunga and Rwenzori ranges, where snow-capped peaks like Mount Stanley pierce the sky. </p>



<p>This region is also marked by active volcanoes such as Mount Nyiragongo, which harbors one of the world’s largest lava lakes, creating a dramatic and otherworldly spectacle.</p>



<p>To the south and west, the country transitions to expansive savannas with rolling grasslands and scattered trees. These areas contrast sharply with the lushness of the forests, providing vital habitats for species like lions and antelope. </p>



<p>Rivers like the Ruki are a dominant feature, with the mighty Congo River coursing through the heart of the country. Its tributaries shape the lives of millions.</p>



<p>The image was captured by the OLI (Operational Land Imager) on Landsat 8.</p>



<p>Image Credit: NASA Earth Observatory&nbsp;</p>



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Ruki River in the Democratic Republic of the Congo

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

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



<p>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. </p>



<p>“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>.</p>



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



<p>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;</p>



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



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



<p>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;</p>



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



<p>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;</p>



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



<p>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;</p>



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



<p>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.</p>



<p>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;</p>



<p>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.</p>



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



<p>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;</p>



<p>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;</p>



<p>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;</p>



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



<p>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;</p>



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



<p>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;</p>



<p>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.</p>



<p>Image Credit<strong>: </strong>NASA, ESA, and STScI</p>



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Hubble captures a stunning stellar nursery

<p>Today's <strong>Image of the Day</strong> from the European Space Agency features the Southern Ring Nebula, also known as NGC 3132.</p>



<p>The nebula is located about 2,000 light-years away from Earth in the constellation Vela. This remarkably detailed image was created using data from Webb’s Near-Infrared Camera (NIRCam).</p>



<p>The Southern Ring Nebula is one of the more famous examples of planetary nebulae. It is often studied for its beauty and valuable insights into the end stages of stellar evolution.</p>



<h2 class="wp-block-heading" id="h-stars-power-the-southern-ring-nebula-nbsp">Stars power the Southern Ring Nebula&nbsp;</h2>



<p>The <a href="https://www.earth.com/news/dragons-egg-nebula-is-a-truly-stunning-sight-to-behold/" target="_blank" rel="noreferrer noopener">nebula</a> is powered by two central stars in a binary system. The brighter star is actually a less massive companion. The fainter, dimmer star is the dying, hot central star that has shed its outer layers to form the nebula. </p>



<p>The dimmer star is a white dwarf and is responsible for the ionization of the gas in the nebula, causing it to glow.</p>



<p>“The bright star at the center of NGC 3132, while prominent when viewed by NASA’s Webb Telescope in near-infrared light, plays a supporting role in sculpting the surrounding nebula," noted <a href="https://www.esa.int/" target="_blank" rel="noreferrer noopener">ESA</a>.</p>



<p>"A second star, barely visible at lower left along one of the bright star’s diffraction spikes, is the nebula’s source. It has ejected at least eight layers of gas and dust over thousands of years.” </p>



<p>“But the bright central star visible here has helped ‘stir’ the pot, changing the shape of this planetary nebula’s highly intricate rings by creating turbulence." </p>



<p>ESA explained that the pair of stars are locked in a tight orbit, which leads the dimmer star to spray ejected material in a range of directions as they orbit one another, resulting in these jagged rings.</p>



<h2 class="wp-block-heading" id="h-key-characteristics-of-the-southern-ring-nebula-nbsp">Key characteristics of the Southern Ring Nebula&nbsp;</h2>



<p>The Southern Ring Nebula displays a complex structure with multiple layers of gas and dust. </p>



<p>The outer shells of the nebula consist of hydrogen and other elements that were ejected from the dying star in previous stages of its <a href="https://www.earth.com/news/young-stellar-objects-observing-the-early-lives-of-stars/" target="_blank" rel="noreferrer noopener">evolution</a>. These layers are illuminated by ultraviolet radiation from the central white dwarf.</p>



<h3 class="wp-block-heading" id="h-coloration">Coloration</h3>



<p>The colors seen in the Southern Ring Nebula come from the different gases present. For example, hydrogen emits red light, while oxygen emits blue-green light. </p>



<p>These colors help astronomers study the composition and dynamics of the nebula.</p>



<h3 class="wp-block-heading" id="h-size-and-shape">Size and shape</h3>



<p>The nebula spans about half a light-year in diameter. Its intricate, symmetrical structure provides valuable insights into the late stages of <a href="https://www.earth.com/news/star-collapse-black-hole-instead-of-supernova-vanish-from-sky/" target="_blank" rel="noreferrer noopener">stellar evolution</a>, especially the processes involved in the shedding of outer layers by dying stars.</p>



<h2 class="wp-block-heading" id="h-spotlights-from-the-bright-star">Spotlights from the bright star</h2>



<p>ESA noted that hundreds of straight, brightly-lit lines pierce through the rings of gas and dust. “These ‘spotlights’ emanate from the bright star and stream through holes in the nebula like sunlight through gaps in a cloud."</p>



<p>“But not all of the starlight can escape. The density of the central region, set off in teal, is reflected by how transparent or opaque it is. Areas that are a deeper teal indicate that the gas and dust are denser - and light is unable to break free.”</p>



<h2 class="wp-block-heading" id="h-more-about-the-image">More about the image</h2>



<p>According to ESA, this is not only a crisp image of a planetary nebula - it also shows us objects in the vast distances of space behind it. The transparent red sections of the nebula are filled with distant <a href="https://www.earth.com/news/galaxies-have-hearts-and-lungs-that-help-them-live-longer/" target="_blank" rel="noreferrer noopener">galaxies</a>.</p>



<p>“Look for the bright angled line at the upper left. It is not starlight - it is a faraway galaxy seen edge-on. Distant spirals, of many shapes and colors, also dot the scene. Those that are farthest away - or very dusty - are small and red,” said ESA.</p>



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



<p>Vela is a southern constellation that represents the sails of a ship. It was once part of a larger constellation called Argo Navis, which depicted the ship of the mythological hero Jason and the Argonauts. </p>



<p>In the 18th century, Argo Navis was divided into three separate constellations: Vela (the sails), Carina (the keel), and Puppis (the stern).</p>



<p>Vela is notable for containing several interesting astronomical features. One of its most prominent stars is Gamma Velorum, also known as Suhail or Regor, which is a bright, massive star system consisting of multiple stars.&nbsp;</p>



<p>The constellation also hosts the Vela Supernova Remnant, the remains of a <a href="https://www.earth.com/news/supernova-explosions-could-damage-distant-planets/" target="_blank" rel="noreferrer noopener">supernova</a> explosion that occurred about 11,000 years ago. </p>



<p>This remnant is associated with the Vela Pulsar, a neutron star that formed during the supernova explosion, which is one of the brightest pulsars in the sky.</p>



<p>Vela is best observed in the Southern Hemisphere, where it can be seen in the summer months. Its position along the Milky Way makes it a popular region for both amateur and professional astronomers to explore.</p>



<p>Image Credit: NASA, ESA, CSA, STScI</p>



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Southern Ring Nebula in the constellation Vela 

<p>Today's <strong>Image of the Day</strong> from the European Space Agency features NGC 6744 - a large, barred spiral galaxy located approximately 30 million light-years away in the constellation Pavo.&nbsp;</p>



<p>The galaxy is often considered a close analog to the <a href="https://www.earth.com/news/uma3-u1-faintest-star-system-found-orbiting-milky-way-galaxy/" target="_blank" rel="noreferrer noopener">Milky Way</a> due to its similar structure and size, spanning about 175,000 light-years across.&nbsp;</p>



<h2 class="wp-block-heading" id="h-euclid-space-mission-nbsp">Euclid space mission&nbsp;</h2>



<p>The image was captured by the <a href="https://www.esa.int/Science_Exploration/Space_Science/Euclid" target="_blank" rel="noreferrer noopener">Euclid</a> space telescope. NGC 6744 stands out as a prime example of the galaxies currently forming the majority of stars in the nearby universe, making it an ideal subject for study with the Euclid mission.&nbsp;</p>



<p>Euclid’s extensive field-of-view allows it to capture the entire galaxy, showcasing not only its large-scale spiral structure but also revealing intricate details on smaller scales across various wavelengths. These details include feather-like dust lanes, known as “spurs,” emerging from the spiral arms.</p>



<h2 class="wp-block-heading" id="h-star-formation-in-ngc-6744">Star formation in NGC 6744</h2>



<p>Euclid's observations enable scientists to count individual stars within NGC 6744, trace the distribution of stars and dust throughout the galaxy, and map the dust associated with the gas that fuels the development of new stars. </p>



<p><a href="https://www.earth.com/news/baby-stars-release-sneezes-of-gas-and-dust-as-they-develop/" target="_blank" rel="noreferrer noopener">Star formation</a> is a key process in the growth of galaxies, making these studies crucial for understanding galaxy evolution.</p>



<p>Researchers are utilizing Euclid’s data to explore the relationship between dust, gas, and star formation; to map the distribution of different stellar populations and identify regions of active star formation; and to investigate the underlying physics of spiral galaxy structures.&nbsp;</p>



<p>Spiral arms play a significant role in star formation by compressing gas, yet the precise mechanisms behind this process are still unclear. The presence of “spurs” along NGC 6744’s spiral arms offers valuable insights into the dynamics of star formation within these structures.</p>



<h2 class="wp-block-heading" id="h-discovering-new-dwarf-galaxies-nbsp">Discovering new dwarf galaxies&nbsp;</h2>



<p>Additionally, Euclid's dataset will help scientists identify clusters of old stars (globular clusters) and discover new dwarf galaxies around NGC 6744. Remarkably, Euclid has already identified a new dwarf satellite galaxy of NGC 6744 - a surprising discovery given that the galaxy has been studied extensively.</p>



<p>With Euclid’s detailed observations, scientists are gaining a deeper understanding of the processes shaping galaxies, providing essential clues to the evolution and appearance of the <a href="https://www.earth.com/news/universes-expansion-rate-hubble-tension-puzzles-astronomers/" target="_blank" rel="noreferrer noopener">universe</a>.</p>



<h2 class="wp-block-heading" id="h-more-about-ngc-6744">More about NGC 6744</h2>



<p>NGC 6744's disk is rich in star-forming regions and contains numerous young, bright blue stars. The galaxy's nucleus is slightly elongated and has a bar structure, which influences the motion of the stars and gas within it.&nbsp;</p>



<p>The spiral arms of NGC 6744 are well-defined and extend outward, wrapping around the central bar. Additionally, NGC 6744 has a smaller companion galaxy, NGC 6744A, which is interacting with it, adding to the complexity and interest of this distant system.&nbsp;</p>



<h2 class="wp-block-heading" id="h-spiral-galaxies">Spiral galaxies</h2>



<p><a href="https://www.earth.com/news/the-mesmerizing-beauty-of-spiral-galaxies/" target="_blank" rel="noreferrer noopener">Spiral galaxies</a> are one of the most common types of galaxies in the universe, characterized by their distinct, spiral-shaped structure.&nbsp;</p>



<p>The galaxies typically consist of a flat, rotating disk containing stars, gas, and dust, along with a central concentration of stars known as the bulge. This bulge is often surrounded by a halo of older stars.&nbsp;</p>



<p>The spiral arms, which extend from the central bulge, are regions of active star formation and are rich in young, hot stars, giving them a bright, bluish appearance.&nbsp;</p>



<p>These arms are also sites where interstellar gas and dust are concentrated, leading to the formation of new stars.&nbsp;</p>



<p>Spiral galaxies are classified into different types based on the tightness of their spirals and the size of their central bulge, with classifications ranging from tightly wound arms in Sa galaxies to more loosely wound arms in Sc galaxies. The <a href="https://www.earth.com/news/large-amount-of-dark-matter-may-be-missing-from-the-milky-way/" target="_blank" rel="noreferrer noopener">Milky Way</a>, our home galaxy, is a prime example of a spiral galaxy.</p>



<h2 class="wp-block-heading" id="h-the-constellation-pavo">The constellation Pavo</h2>



<p>Pavo, which means "peacock" in Latin, is a constellation in the southern sky. It was named by the Dutch astronomer Petrus Plancius in the late 16th century, based on observations made during the Dutch explorations of the southern hemisphere. </p>



<p>Pavo is one of the 12 constellations created by Plancius from the records of explorers Pieter Dirkszoon Keyser and Frederick de Houtman. </p>



<p>The constellation is known for its distinctive shape, resembling a peacock with a long, curved tail. Pavo is not visible from most of the northern hemisphere, but it can be seen from the southern hemisphere, particularly during the winter months.</p>



<p>The constellation contains several interesting celestial objects, including the star Peacock, also known as Alpha Pavonis, which is the brightest star in the constellation. This star is a blue-white subgiant located about 179 light-years from Earth.</p>



<p>Image Credit: <a href="https://www.esa.int/" target="_blank" rel="noreferrer noopener">ESA</a>/Euclid/Euclid Consortium/NASA&nbsp;</p>



<p>-----</p>



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Spiral galaxy NGC 6744 in the constellation Pavo

<p>In our united struggle against the threat of global warming, progress appears stagnant. While Britain boldly abandons the era of fossil fuels, the world faces the relentless surge of CO2 emissions.</p>



<p>Indeed, Britain's closure of its last coal-burning power station marks a victory, but can it counterbalance the alarming prediction of 41.2 billion tons of CO2 that our atmosphere is expected to house by 2024?</p>



<h2 class="wp-block-heading" id="h-global-co2-emissions">Global CO2 emissions</h2>



<p>The recently held Conference of the Parties (COP29) in Baku, Azerbaijan, allowed prominent leaders such as PM Keir Starmer to declare their commitment towards reducing greenhouse gases.</p>



<p>Concurrently, the conference highlighted the ominous worldwide forecast of <a href="https://www.earth.com/news/met-office-2024-co2-levels-will-surpass-the-point-of-no-return/" target="_blank" rel="noreferrer noopener">CO2</a> emissions resultant of fossil fuel combustion.</p>



<p>Discussions at COP29 highlighted the urgency for countries to adopt stronger climate policies and phase out fossil fuels. However, global dependence on these energy sources persists, despite a growing transition to cleaner alternatives. </p>



<p>The conference revealed a critical gap between current actions and the scale of changes needed to avoid the most severe impacts of climate change​​​​.</p>



<h2 class="wp-block-heading" id="h-fossil-fuels-and-their-dirty-side">Fossil fuels and their "dirty" side</h2>



<p>The trifecta of fossil fuels - coal, oil, and gas - take center stage in the carbon emissions debacle. </p>



<p>Despite these fuels' role in quenching our insatiable energy appetite, the environmental repercussions are distressing. According to recent research, coal ranks as the main culprit, accounting for a 41% share, followed by oil (32%) and gas (21%).</p>



<p>The research study, lead by Pierre Friedlingstein alongside a 120-scientist team from Exeter's <a href="https://www.exeter.ac.uk/research/institutes/gsi/" target="_blank" rel="noreferrer noopener">Global Systems Institute</a>, yet again spotlights the "increasingly dramatic" <a href="https://www.earth.com/news/plants-absorb-31-more-co2-than-previously-estimated/" target="_blank" rel="noreferrer noopener">effects of global warming</a>.</p>



<h2 class="wp-block-heading" id="h-bird-s-eye-view-of-co2-emissions">Bird's eye view of CO2 emissions</h2>



<p>The geographic distribution of carbon emissions is also concerning. China tops the emissions chart with 12 billion tonnes (13.2 billion U.S. tons) of CO2, which equals a hefty 32% of the global total.</p>



<p>The United States and India trail with contributions of 13% and 8%, respectively, and the EU contributes an additional 7%. This leaves about 38% of <a href="https://www.earth.com/news/atmospheric-co2-could-push-temperatures-much-higher-than-expected/" target="_blank" rel="noreferrer noopener">emission</a> shares spread across various other nations.</p>



<p>While fossil fuels remain under scrutiny, another significant contributor to CO2 emissions is land use change, such as deforestation.</p>



<p>Predictions for 2024 suggest an added 4.2 billion tonnes (4.6 billion U.S. tons) of CO2 to our atmosphere from land use changes alone. </p>



<h2 class="wp-block-heading" id="h-renewable-energy-revolution">Renewable energy revolution</h2>



<p>Despite the gloomy picture painted by these numbers, a ray of hope breaks through the clouds. An increasing shift towards renewable energy sources like solar, biomass, and geothermal, signals a potential for change. </p>



<p>Britain's successful transition from coal sets a precedent, but will the world follow this lead?</p>



<p>With global CO2 emissions on the rise, innovation and technology offer critical weapons in our climate change battle. </p>



<p>Carbon capture and storage (CCS) techniques, for example, could potentially cut industrial emissions by up to 90%.</p>



<p>Additionally, breakthroughs in smart grids and energy efficiency could aid in reducing global emissions further. These developments underscore the need for continued research and innovation in clean energy solutions.</p>



<h2 class="wp-block-heading" id="h-education-and-policy-reform">Education and policy reform</h2>



<p>The transition journey to a low-carbon future is multifaceted, demanding an equally diverse response. </p>



<p>Education and policy reforms, combined with technological advancements, are the thrust propelling us towards a sustainable future. </p>



<p>Knowledge dissemination can generate global awareness and help to create a new generation committed to sustainable living. Likewise, effective policy can trigger tangible changes in our energy consumption habits.</p>



<h2 class="wp-block-heading" id="h-rapid-cuts-to-fossil-fuels">Rapid cuts to fossil fuels</h2>



<p>Our progress to date is noteworthy, but we've got a long road ahead in the <a href="https://www.earth.com/news/rising-co2-will-cause-rapid-climate-change-in-the-tropical-andes/" target="_blank" rel="noreferrer noopener">carbon emissions</a> fight. A global embrace of renewable energy technologies is crucial to achieve the Paris Agreement goals. </p>



<p>A plateau in emissions growth over the past decade shows modest progress compared to previous trends, but it is far from the deep reductions needed to meet the Paris Agreement goals. </p>



<p>We need sharp, immediate reductions in fossil fuel usage to keep the global average temperature rise under 2°C, and ideally 1.5°C. With every passing second, the urgency to combat the dangers of CO2 emissions escalates.</p>



<p>Current projections indicate that warming will exceed the 1.5°C target within six years unless emissions are drastically reduced.</p>



<p>-----</p>



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Global CO2 emissions rise as nations tackle fossil fuel dependence

In our united struggle against the threat of global warming,...

<p>Imagine Manhattan, chest-deep in plastic waste that reaches ten times the height of the Empire State Building. Seems like a harrowing depiction from a dystopian film, doesn't it? Well, without significant intervention, our world may bear witness to a similar scenario by 2050.</p>



<p>However, there's a glimmer of hope: a recent study details a four-fold policy that could help us avoid this catastrophe.</p>



<p>This study is the result of tireless efforts by researchers from two distinguished institutions: the <a href="https://www.berkeley.edu/" target="_blank" rel="noreferrer noopener">University of California, Berkeley</a> and the <a href="https://www.ucsb.edu/" target="_blank" rel="noreferrer noopener">University of California, Santa Barbara</a>.</p>



<p>The researchers explored potential approaches to combating the mounting plastic waste crisis, with a focus on limiting plastic-related greenhouse gases.</p>



<h2 class="wp-block-heading" id="h-tackling-the-plastic-pollution-crisis">Tackling the plastic pollution crisis</h2>



<p>The study, titled “Pathways to reduce global <a href="https://www.earth.com/news/coca-cola-pepsi-among-top-contributors-to-plastic-waste/" target="_blank" rel="noreferrer noopener">plastic waste</a> mismanagement and greenhouse gas emissions by 2050,” suggests that four policies can cut down mismanaged plastic waste by 91% and plastic-related greenhouse gases by a third.</p>



<p>This policy package includes mandates for new products to be made with 40% post-consumer <a href="https://www.earth.com/news/earth-day-resolutions-misconceptions-about-recycling-plastics/" target="_blank" rel="noreferrer noopener">recycled plastic</a>, caps on new plastic production at the 2020 level, substantial investments in plastic waste management, and the implementation of a small fee on plastic packaging. </p>



<p>The findings suggest that, by implementing these proposed policies, the emissions cut would be equivalent to taking 300 million gasoline-powered vehicles off the road for a year.</p>



<h2 class="wp-block-heading" id="h-global-agreement-to-end-plastic-pollution">Global agreement to end plastic pollution </h2>



<p>The research comes on the eve of a global agreement to end plastic pollution that will be negotiated in Busan, Republic of Korea.  </p>



<p>“This is it. These upcoming negotiations in Busan are our one chance to come together as a planet and fix this problem,” said study co-author Dr. Douglas McCauley.</p>



<p>“One of the most exciting discoveries in this research is that it is actually possible to nearly end plastic pollution with this Treaty. I'm cautiously optimistic, but we can’t squander this once-in-a-lifetime opportunity,” he added.</p>



<h2 class="wp-block-heading" id="h-potential-solutions-to-end-the-plastic-crisis">Potential solutions to end the plastic crisis</h2>



<p>Without intervention, annual <a href="https://www.earth.com/news/new-disease-found-in-seabirds-is-caused-by-plastic-consumption/" target="_blank" rel="noreferrer noopener">plastic consumption</a> could rise by 37% between 2020 and 2050, while plastic pollution could nearly double. </p>



<p>This alarming forecast highlights the urgent need for collective, global action.</p>



<p>According to study co-author Dr. Roland Geyer, the research highlights the extent of the plastic problem, and identifies potential solutions.</p>



<p>“This study demonstrates how far we have come not just in quantifying the manifold problems surrounding plastics, but also in identifying and evaluating potential solutions. I am very proud of what our team was able to achieve in time for the final round of negotiations for the <a href="https://www.earth.com/news/global-plastics-treaty-tackles-the-pollution-problem-directly-at-the-source/" target="_blank" rel="noreferrer noopener">Global Plastics Treaty,</a>” said Dr. Geyer.</p>



<h2 class="wp-block-heading" id="h-ambitious-negotiations-are-needed">Ambitious negotiations are needed</h2>



<p>Study lead author Sam Pottinger invites negotiators to be ambitious, emphasizing the importance of data-informed decision making for the treaty.</p>



<p>Pottinger insists that negotiators should understand the progress they have made according to the best available science.</p>



<p>A major concern in the fight against plastic pollution is the disproportionate burden it places on countries in the Global South, making it a significant global environmental justice issue. </p>



<p>The treaty could potentially establish financing mechanisms that drive necessary investment into waste management and recycling infrastructure in these regions.</p>



<h2 class="wp-block-heading" id="h-forecasting-future-plastic-production">Forecasting future plastic production </h2>



<p>The team's research was enhanced by an AI-generated tool developed at the Benioff Ocean Science Laboratory and Bren School of Environmental Science &amp; Management at UC Santa Barbara, and the Eric and Wendy Schmidt Center for Data Science &amp; Environment at UC Berkeley. </p>



<p>The tool uses machine learning to forecast the future of <a href="https://www.earth.com/news/plastic-production-increases-create-identical-plastic-pollution-increase/" target="_blank" rel="noreferrer noopener">plastic production</a>, pollution, and trade by combining information about population growth and economic trends.</p>



<h2 class="wp-block-heading" id="h-joining-together-to-take-action">Joining together to take action</h2>



<p>Dr. Nivedita Biyani, a researcher at UC Santa Barbara, voices optimism for a sustainable future.</p>



<p>“This policy work shows that we can reach minimal mismanaged plastic waste if we can come together in action. This provides policymakers with a novel tool that isn’t prescriptive - they can combine various policies as they see fit," said Dr. Biyani.</p>



<p>"Going forward, I think a mechanism to gather data on plastic production and trade will be a key factor. We need supply chain transparency here."</p>



<p>The study is published in the journal <em><a href="https://www.science.org/doi/10.1126/science.adr3837" target="_blank" rel="noreferrer noopener">Science</a></em>.</p>



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How can we combat the escalating plastic crisis?

Imagine Manhattan, chest-deep in plastic waste that reaches ten times...

<p>In the face of a rapidly globalizing world, the ever-increasing numbers around one of the most prevalent metabolic disorders are alarming. By 2022, the rate of adults worldwide living with either type 1 or type 2 diabetes had shockingly doubled compared to cases in 1990 - reaching a daunting 800 million.</p>



<p>An analysis from The Lancet reveals that about 445 million adults are currently living with diabetes that has not been adequately treated. </p>



<h2 class="wp-block-heading" id="h-increasing-rate-of-diabetes">Increasing rate of diabetes</h2>



<p>The data presents a startling revelation - India bears the brunt of this health crisis, hosting over a fourth of the world’s <a href="https://www.earth.com/news/type-2-diabetes-heightens-alzheimers-risk/" target="_blank" rel="noreferrer noopener">diabetic adults</a>.</p>



<p>A total of 212 million individuals, trailed by China's 148 million, are combating diabetes across India. This escalating issue is also prevalent in the United States, Pakistan, Indonesia, and Brazil.</p>



<p>Although this study did not distinguish between type 1 and type 2 diabetes in adults, it's widely accepted that the majority of these cases are attributed to type 2 diabetes.</p>



<h2 class="wp-block-heading" id="h-inequalities-in-healthcare">Inequalities in healthcare</h2>



<p>Professor Majid Ezzati of Imperial College London expressed serious concerns about global inequalities in diabetes treatment.</p>



<p>"Our study highlights widening global inequalities in diabetes, with treatment rates stagnating in many low- and middle-income countries where numbers of adults with <a href="https://www.earth.com/news/diabetes-drugs-may-protect-against-dementia/" target="_blank" rel="noreferrer noopener">diabetes</a> are drastically increasing," noted Ezzati.</p>



<p>"This is especially concerning as people with diabetes tend to be younger in low-income countries and, in the absence of effective treatment, are at risk of life-long complications - including amputation, heart disease, kidney damage or vision loss - or in some cases, premature death."</p>



<h2 class="wp-block-heading" id="h-diabetes-rates-an-upward-spiral">Diabetes rates: An upward spiral</h2>



<p>Thanks to the collaborative efforts of the NCD Risk Factor Collaboration and the World Health Organization, we now have a comprehensive analysis of global diabetes rates and treatment. </p>



<p>This study, which included data from over 140 million individuals aged 18 years and older from various countries, has revealed deeply unsettling truths.</p>



<p>The numbers are a bitter pill to swallow. Since 1990, diabetes rates have doubled for both men and women (rising from 6.8% to 14.3% and from 6.9% to 13.9%, respectively). </p>



<p>This translates to around 828 million adults living with diabetes in 2022 - a drastic increase from nearly 198 million in 1990.</p>



<h2 class="wp-block-heading" id="h-disparities-across-the-globe">Disparities across the globe</h2>



<p>Not all nations are equal when it comes to <a href="https://www.earth.com/news/deadly-snail-venom-possible-key-to-improving-diabetes-medicine/" target="_blank" rel="noreferrer noopener">diabetes</a> rates. Between 1990 and 2022, low- and middle-income countries (LMICs) saw the biggest increases. </p>



<p>In contrast, several high-income countries, such as Japan, Canada, and parts of Western Europe, observed no change or only minor decreases in diabetes rates.</p>



<p>In 2022, the prevalence of diabetes was particularly high in the Pacific island nations, the Caribbean, Middle East and North Africa, Pakistan, and Malaysia. On a brighter note, Western Europe, East Africa, Japan, and Canada reported the lowest rates.</p>



<p>Obesity and poor diets have largely fueled the surge in Type 2 diabetes. Areas where obesity is prevalent, or has dramatically increased, faced higher diabetes rates between 1990 to 2022.</p>



<h2 class="wp-block-heading" id="h-addressing-the-global-diabetes-rate">Addressing the global diabetes rate</h2>



<p>Dr. Ranjit Mohan Anjana, an expert at the Madras Diabetes Research Foundation in India, emphasized the need for diabetes prevention through healthier diets, exercise, and strong health policies, specifically in economically disadvantaged regions.</p>



<p>As of 2022, three out of five adults aged 30 years and older with diabetes - and total of 445 million individuals - did not receive adequate medication. The discrepancy in treatment coverage among nations is striking, with Belgium maintaining the highest rates.</p>



<h2 class="wp-block-heading" id="h-coverage-for-diabetes-treatment">Coverage for diabetes treatment </h2>



<p>Despite the swelling diabetic populations, the coverage for diabetes treatment in many LMICs remains low. It’s troubling to note that over 90% of people were untreated in 1990, a figure that has not changed substantially even in 2022.</p>



<p>“Our findings suggest there is an increasing share of people with diabetes, especially with untreated diabetes, living in low- and middle-income countries," said Professor Jean Claude Mbanya, <a href="https://uy1.uninet.cm" target="_blank" rel="noreferrer noopener">University of Yaoundé 1</a>, Cameroon. </p>



<p>"In 2022, only 5-10% of adults with diabetes in some sub-Saharan Africa countries received treatment for <a href="https://www.earth.com/news/insufficient-sleep-increases-diabetes-risk-in-women/" target="_blank" rel="noreferrer noopener">diabetes</a>, leaving a huge number at risk of the serious health complications.” </p>



<p>The study is published in the journal<em> <a href="https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(24)02317-1/fulltext" target="_blank" rel="noreferrer noopener">The Lancet</a>.</em></p>



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Global diabetes rate has doubled, reaching over 800 million

In the face of a rapidly globalizing world, the ever-increasing...


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<p>Today’s <strong>Video of the Day</strong> from the <a href="https://www.acs.org/">American Chemical Society</a> explores how climate change may affect hibernating animals, and whether more animals will begin to hibernate in a warmer world.&nbsp; Hibernation is a type of dormancy in which animals decrease their activity. During this period, animals usually experience reduced body temperatures, lower heat rate, and a slower metabolism.</p>



<p>There are two main types of hibernation. Obligatory hibernation involves a fixed yearly rhythm. Facultative hibernation takes place when environmental conditions change, such as when the days get shorter, temperatures drop, or food becomes scarce.&nbsp;</p>



<p>Animals hibernate as a result of extremely hot or cold temperatures. They build up fat stores so that they can survive dormant periods that can last for months at a time.&nbsp;</p>



<p>According to ACS, climate change may prevent animals from being able to build up their fat storage. Warmer summers and droughts will lead to lower food availability. This means that facultative hibernation patterns will be especially disrupted by climate change.&nbsp;</p>



<p>The genes needed for dormancy and hibernation are actually found in many animals, including humans. These genes could be switched on when the environmental conditions, such as climate or food availability, require an animal to hibernate.&nbsp;</p>



<p>ACS reports that scientists have already started to see animals like squirrels and bears emerge from hibernation early due to warming winters. As a result, they are waking up when their food sources are not ready, or when there is more competition for food.&nbsp;</p>



<p><em>Video Credit: American Chemical Society&nbsp;</em></p>



<p><em>&#8211;</em><em>&#8212;</em></p>



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


Our warming climate is changing how animals hibernate