Today's Image of the Day from the European Space Agency features a satellite view of the fires burning in Southern California.



“Five wildfires - the biggest of which are the Palisades and the Eaton fires - are still currently burning (as of January 10, 2025) in areas of north Los Angeles. At least 10 people are known to have lost their lives and many more properties have been burnt to the ground,” said <a href="https://www.esa.int/ESA_Multimedia/Images/2025/01/Los_Angeles_struggles_to_contain_wildfires" target="_blank" rel="noreferrer noopener">ESA</a>.



“This image, captured by the Copernicus Sentinel-3 mission on January 9, 2025, shows the Palisades fire at lower left and the Eaton fire at upper right, with smoke seen reaching Catalina Island and the Santa Barbara reserve to the south of the fire.”&nbsp;



The fires have now burned more than 37,000 acres - an area bigger than San Francisco - according to Cal Fire. More than 12,000 structures have been destroyed.



<h2 class="wp-block-heading" id="h-tens-of-thousands-of-residents-displaced-by-fires">Tens of thousands of residents displaced by fires</h2>



The Palisades Fire is the largest at more than 21,000 acres, while the Eaton Fire has burned more than 14,000 acres. Those blazes are 11 percent and 15 percent contained, respectively.



Evacuation orders have displaced over 150,000 residents, with an additional 166,000 on alert. Temporary shelters are operating at full capacity, and widespread power outages have affected nearly 1.6 million homes.&nbsp;



<h2 class="wp-block-heading" id="h-strong-winds-and-a-lack-of-resources-nbsp">Strong winds and a lack of resources&nbsp;</h2>



Firefighting efforts are being hampered by strong <a href="https://www.earth.com/news/wildfire-smoke-is-more-toxic-than-other-sources-of-pollution/" target="_blank" rel="noreferrer noopener">winds</a>, with gusts reaching up to 100 miles per hour, and a lack of resources. Some fire hydrants have run dry, complicating containment efforts.&nbsp;



In response to the crisis, President Biden has approved federal disaster assistance, and additional firefighters from neighboring states are joining the efforts.&nbsp;



The California National Guard has been deployed, and the Department of Defense is providing personnel and equipment. Despite these measures, the fires continue to pose a significant threat to the region.&nbsp;



<h2 class="wp-block-heading" id="h-new-threats-from-the-palisades-fire-nbsp">New threats from the Palisades Fire&nbsp;</h2>



The Palisades Fire, which began near the Pacific Palisades neighborhood in Los Angeles, has rapidly expanded, prompting new evacuation orders for areas including Tarzana and Encino in the San Fernando Valley.&nbsp;



The fire's swift progression has been exacerbated by strong winds, causing it to grow by "three football fields of land per minute." This rapid expansion has led to mandatory evacuations along sections of the Pacific Coast Highway and surrounding areas.&nbsp;



The Los Angeles Fire Department reported that more than 10,000 houses and 13,000 buildings are under threat.&nbsp;



<h2 class="wp-block-heading" id="h-unpredictable-behavior-of-the-fires">Unpredictable behavior of the fires</h2>



In response to the advancing flames, evacuation orders were extended into Tarzana and Encino on January 10. Residents in these areas have been advised to evacuate promptly due to the fire's unpredictable behavior and the potential for further spread.&nbsp;



The situation remains critical, with firefighting efforts ongoing to contain the blaze and protect threatened communities.&nbsp;



Authorities continue to monitor the fire's progression and are urging residents to stay informed and adhere to evacuation orders for their safety.



<h2 class="wp-block-heading" id="h-wildfires-in-southern-california-nbsp">Wildfires in Southern California&nbsp;</h2>



<a href="https://www.earth.com/news/dry-lightning-sparks-the-most-destructive-california-wildfires/" target="_blank" rel="noreferrer noopener">Wildfires</a> in Southern California are particularly severe due to a combination of factors. The region’s hot, dry climate creates ideal conditions for fires, especially during the summer and fall when vegetation is parched.&nbsp;



Seasonal Santa Ana winds exacerbate the problem by driving <a href="https://www.earth.com/news/canadian-wildfires-of-2023-were-a-global-environmental-setback/" target="_blank" rel="noreferrer noopener">flames</a> rapidly across the landscape, making fires difficult to contain. The area’s diverse and often dense vegetation, such as chaparral and grasslands, provides abundant fuel.&nbsp;



Furthermore, Southern California’s growing urban footprint increases the risk of fires igniting due to human activity, while also placing more people and infrastructure in harm’s way.&nbsp;



Climate change intensifies these challenges by extending fire seasons and increasing the frequency of extreme heat and drought events, creating a feedback loop that makes wildfires increasingly <a href="https://www.earth.com/news/californias-forests-are-losing-their-ability-to-recover/" target="_blank" rel="noreferrer noopener">destructive</a>.



<h2 class="wp-block-heading" id="h-impacts-of-the-california-fires">Impacts of the California fires</h2>



The Palisades and Eaton Fires are among the most destructive wildfires in California's history, both in terms of structures destroyed and economic impact. Fortunately, however, they have not surpassed the Camp Fire in terms of human fatalities.



The Camp Fire of 2018 remains the deadliest wildfire in the state of California, with 85 fatalities. 



The financial impact of the current fires is unprecedented. Estimates suggest that the damages could reach between $135 billion and $150 billion, potentially making these wildfires the costliest in U.S. history.



Image Credit: ESA&nbsp;



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Satellite captures devastating fires in Southern California

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

Today's Image of the Day from NASA Earth Observatory features an astronaut view of Mount Nemrut, a volcano located in eastern Turkey near Lake Van.



Mount Nemrut is notable for its immense caldera, which was formed through a series of <a href="https://www.earth.com/news/volcanic-eruptions-play-an-overlooked-role-in-earths-climate/" target="_blank" rel="noreferrer noopener">eruptions</a>. The caldera, one of the largest in the world, now contains several lakes such as Lake Nemrut.&nbsp;



"The eastern half of the caldera is partially filled by solidified lava flows from past eruptions. Snow cover present at the time of this photo accentuates pressure ridges that formed as the lava was flowing and cooling," noted <a href="https://earthobservatory.nasa.gov/" target="_blank" rel="noreferrer noopener">NASA</a>.



"These pressure ridges vary in size, thickness, and orientation due to the varying viscosity and flow direction of the lavas during eruptions."



<h2 class="wp-block-heading" id="h-formation-of-lake-nemrut">Formation of Lake Nemrut</h2>



"Lake Nemrut (Nemrut Gölü) occupies the western half of the caldera, creating a rough crescent shape that partially submerges the old lava flows," said NASA.



"This freshwater lake, reaching up to 176 meters deep, is accompanied by a smaller lake at the upper-center of the caldera."



The lake was formed after the collapse of the Nemrut volcano's summit. This collapse created a massive crater, which gradually filled with water over time, forming 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">lake</a>.



<h2 class="wp-block-heading" id="h-unesco-world-heritage-site">UNESCO World Heritage Site </h2>



Mount Nemrut and its surroundings are part of a protected UNESCO World Heritage Site due to their ecological and geological significance.



The site is home to diverse wildlife, including various bird species that use the lake as a stopover during migration. The caldera also contains smaller lakes and wetlands, adding to the area's biodiversity.



Lake Nemrut is a popular destination for tourists, hikers, and nature enthusiasts, offering stunning views of the volcanic landscape.



Despite its popularity, the lake remains relatively remote and unspoiled, contributing to its appeal as a natural wonder.



<h2 class="wp-block-heading" id="h-mount-nemrut-has-shaped-the-landscape">Mount Nemrut has shaped the landscape</h2>



Geologically, Mount Nemrut is interesting because its <a href="https://www.earth.com/news/new-research-enhances-predictions-on-volcanic-eruptions/" target="_blank" rel="noreferrer noopener">eruptions</a> have played a key role in shaping the local landscape. 



Its last major eruption occurred around 1441 AD, which indicates that it's not currently active but is considered dormant.



The area around Nemrut is known for its geothermal activity, including hot springs and fumaroles, suggesting that there is still significant heat beneath the surface.



Over thousands of years, various civilizations have inhabited the region around Nemrut, leaving behind a wealth of archaeological sites.



<h2 class="wp-block-heading" id="h-tribute-to-a-king">Tribute to a king</h2>



The summit of Mount Nemrut is dominated by a vast funerary mound constructed by King Antiochus I Theos, who ruled the Kingdom of Commagene in the 1st century BCE. 



The site was intended to serve as his tomb sanctuary and a place to commemorate the king's vision of divine kingship and unity between Eastern and Western cultures.



The mound, made of loose crushed stones, measures about 50 meters (164 feet) in height and spans a diameter of 150 meters (492 feet), creating an imposing feature visible from afar.



Surrounding the mound are terraces on the eastern, western, and northern sides, each adorned with colossal statues and reliefs. The statues, ranging in height from 8 to 10 meters (26 to 33 feet), represent various deities, including Zeus, Apollo, Hercules, and the goddess Tyche, alongside King Antiochus himself. 



The heads of the statues, many of which have toppled over due to <a href="https://www.earth.com/news/new-map-shows-75-percent-of-the-u-s-at-risk-of-damaging-earthquakes/" target="_blank" rel="noreferrer noopener">earthquakes</a> and erosion, lie scattered around the site, creating an iconic and enigmatic scene.



<h2 class="wp-block-heading" id="h-spiritual-and-religious-practices">Spiritual and religious practices</h2>



In addition to the statues, inscriptions at Mount Nemrut provide valuable historical information about the kingdom, the king's lineage, and the religious practices of the time.



The site is not only a marvel of ancient engineering but also a spiritual and astronomical center. Scholars believe the terraces were aligned with celestial events, serving as an observatory for solstices and equinoxes.



In addition to its natural and historical significance, the Nemrut volcano has been the subject of scientific study, as researchers aim to understand more about <a href="https://www.earth.com/news/volcanic-eruptions-play-an-overlooked-role-in-earths-climate/" target="_blank" rel="noreferrer noopener">volcanic activity</a> in the region, the history of its eruptions, and the potential risks it may pose in the future.



Image Credit: NASA Earth Observatory



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Mount Nemrut: Ancient mysteries and natural marvels 

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

Today's Image of the Day from the European Space Agency features the galaxy I Zwicky 18, which was captured in remarkable detail by the James Webb Space Telescope.



I Zwicky 18 is a blue compact dwarf <a href="https://www.earth.com/news/newly-discovered-stars-milky-way-are-old-as-universe/" target="_blank" rel="noreferrer noopener">galaxy</a> located approximately 59 million light-years away in the constellation Ursa Major.&nbsp;



<h2 class="wp-block-heading" id="h-star-formation-in-i-zwicky-18">Star formation in I Zwicky 18</h2>



The galaxy is notable for its relatively young appearance and the fact that it contains very few heavy elements. These characteristics indicate that it has experienced little <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> compared to other galaxies of similar age.



“The galaxy was first identified by Swiss astronomer Fritz Zwicky in the 1930’s and resides roughly 59 million light-years from Earth,” noted <a href="https://www.esa.int/" target="_blank" rel="noreferrer noopener">ESA</a>. “This galaxy has gone through several sudden bursts of star formation.”&nbsp;



According to ESA, I Zwicky 18 is typical of the kinds of galaxies that inhabited the early universe and is much smaller than our <a href="https://www.earth.com/news/runaway-star-j1249-36-spotted-trying-to-escape-our-milky-way-galaxy/" target="_blank" rel="noreferrer noopener">Milky Way</a>.



<h2 class="wp-block-heading" id="h-webb-telescope-image-of-the-galaxy">Webb telescope image of the galaxy</h2>



“Two major starburst regions are embedded in the heart of the galaxy. The wispy brown filaments surrounding the central starburst region are bubbles of gas that have been heated by stellar winds and intense ultraviolet radiation unleashed by hot, young stars,” said ESA.



“A companion galaxy resides nearby to the dwarf galaxy, which can be seen at the bottom of the wider-field image. The companion may be interacting with the dwarf galaxy and may have triggered that galaxy's recent star formation.”&nbsp;



ESA explained that the “orange blobs” surrounding the galaxy are the dim glow from ancient fully formed galaxies at much larger distances.



<h2 class="wp-block-heading" id="h-key-characteristics-of-i-zwicky-18">Key characteristics of I Zwicky 18</h2>



As previously mentioned, the galaxy has a very low abundance of elements heavier than hydrogen and helium, suggesting that it has not undergone significant stellar processing.



<h3 class="wp-block-heading" id="h-young-stellar-population-nbsp">Young stellar population&nbsp;</h3>



Despite its old age, I Zwicky 18 contains many young, hot stars. This suggests that it might have experienced a burst of <a href="https://www.earth.com/news/hubble-detects-awe-inspiring-newborn-star/" target="_blank" rel="noreferrer noopener">star formation</a> relatively recently in its history.



<h3 class="wp-block-heading" id="h-interstellar-medium-nbsp">Interstellar medium&nbsp;</h3>



The galaxy has a high density of gas, which is a prime ingredient for star formation. This gas is mostly in the form of hydrogen.



<h3 class="wp-block-heading" id="h-unusual-characteristics">Unusual characteristics</h3>



Its characteristics are more typical of primordial galaxies found in the early universe, making it a valuable object of study for understanding galaxy formation and evolution.



Ultimately, I Zwicky 18 provides insights into the conditions and processes that might have been prevalent in the early universe.



<h3 class="wp-block-heading" id="h-life-cycles-of-stars-and-dust">Life cycles of stars and dust</h3>



The image was captured as part of a Webb program to study the life cycle of dust in I Zw 18.&nbsp;



“Scientists are now building off of previous research with Hubble obtained at optical wavelengths, studying individual dusty stars in detail with Webb’s equivalent spatial resolution and sensitivity at infrared wavelengths.”&nbsp;



ESA noted that this galaxy is of particular interest as its content of elements heavier than helium is one of the lowest of all known <a href="https://www.earth.com/news/early-galaxy-formation-occurred-much-faster-than-we-thought/" target="_blank" rel="noreferrer noopener">galaxies</a> in the local universe.&nbsp;



“Such conditions are thought to be similar to those in some of the first star-forming galaxies at high redshift, so the Webb study of I Zw 18 should shed light on the life-cycle of stars and dust in the early universe.”



<h2 class="wp-block-heading" id="h-the-constellation-ursa-major">The constellation Ursa Major </h2>



Ursa Major, also known as the Great Bear, is one of the most prominent and easily recognizable constellations in the northern sky. 



Its name, "Ursa Major," means "Great Bear" in Latin, and it has been a significant part of various mythologies and star lore across cultures for thousands of years. 



One of the most famous asterisms within Ursa Major is the Big Dipper, a group of seven bright stars that form a shape resembling a ladle or dipper. The Big Dipper is often used as a navigation tool because it points to Polaris, the North Star, located in the nearby constellation Ursa Minor.



Ursa Major is best viewed in the northern hemisphere and is circumpolar, meaning it is visible year-round for much of the Northern Hemisphere. Its position changes with the seasons, rotating around Polaris, the North Star.



Image Credit: NASA/ESA/CSA James Webb Space Telescope



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Dwarf galaxy provides a window into the early universe

Today's Image of the Day from the European Space Agency features massive amounts of smoke rising from multiple wildfires in Southern California&nbsp;



The largest blaze is the Palisades Fire, which ignited near the Pacific Palisades neighborhood in Los Angeles on January 7, 2025.&nbsp;



<h2 class="wp-block-heading" id="h-explosive-wildfire-conditions">Explosive wildfire conditions</h2>



The Palisades Fire spread rapidly due to severe drought conditions and strong Santa Ana winds, with gusts reaching up to 100 miles per hour.&nbsp;



Within hours, the fire expanded from 200 acres to over 2,900 acres, threatening thousands of structures and prompting mandatory evacuations for thousands of residents.



<h2 class="wp-block-heading" id="h-most-ferocious-winds-in-years">Most ferocious winds in years</h2>



A report from Fox Weather noted: “More than 260,000 people are under some sort of evacuation statement as multiple uncontained wildfires consume everything in their path.”



The news agency said that the fires are fueled by the “most ferocious Santa Ana winds in over 14 years.” The report further noted that “the level of destruction extends both north and south along the coast, with hurricane-force winds that are incredibly strong, dry, and unpredictable.”&nbsp;



As of January 8, the Palisades Fire had rapidly exploded to over 5,000 acres and remained uncontained. The cause of the fire is currently under investigation.&nbsp;



“This image captured by the Copernicus Sentinel-2 mission vividly depicts the smoke billowing from the fire near Santa Monica at 10:36 local time on January 7, 2025, not long after the fire broke out. The blaze has since caused widespread damage and concern,” noted <a href="https://www.esa.int/ESA_Multimedia/Images/2025/01/Los_Angeles_ablaze" target="_blank" rel="noreferrer noopener">ESA</a>.



<h2 class="wp-block-heading" id="h-widespread-damage-and-concern">Widespread damage and concern</h2>



The Los Angeles Fire Department (LAFD) has deployed over 1,400 firefighters to combat the blaze. However, the intense winds have hindered aerial firefighting efforts, as aircraft were grounded for safety reasons.&nbsp;



The fire has destroyed more than 1,000 structures, including several homes in Malibu, and has led to significant traffic congestion as residents evacuate the area.&nbsp;



<h2 class="wp-block-heading" id="h-warning-for-extreme-fire-behavior-nbsp">Warning for extreme fire behavior&nbsp;</h2>



On Monday, before the fires broke out, the weather service office in Los Angeles warned that wind gusts could reach 100 miles per hour in some areas this week - creating the potential for "extreme fire behavior.” 



In addition to the Palisades Fire, three other significant blazes include the Eaton Fire in the Altadena region and the Hurst Fire in northern Sylmar. These fires have prompted further evacuations and continue to threaten numerous structures.&nbsp;



"L.A. County and all 29 fire departments in our county are not prepared for this type of widespread disaster," LA County Fire Chief Anthony C. Marrone said at a news conference. "There are not enough firefighters in L.A. County to address four separate fires of this magnitude."



<h2 class="wp-block-heading" id="h-a-hurricane-of-fire">A hurricane of fire</h2>



High wind warnings and red flag warnings in effect across the region indicate that the critical fire weather conditions are ongoing.&nbsp;



Residents are advised to remain vigilant, adhere to evacuation orders, and stay informed through official channels as the situation evolves.



"Winds will not die down much until noon on Wednesday around Los Angeles," said meteorologist Ryan Maue on X. "The worst is yet to come in next few hours with 80-105 mph gusts. This is a hurricane of fire."



<h2 class="wp-block-heading" id="h-wildfires-in-southern-california-nbsp">Wildfires in Southern California&nbsp;</h2>



Wildfires in Southern California are particularly severe due to a combination of factors. The region’s hot, dry climate creates ideal conditions for fires, especially during the summer and fall when vegetation is parched.&nbsp;



Seasonal Santa Ana winds exacerbate the problem by driving flames rapidly across the landscape, making fires difficult to contain. The area's diverse and often dense vegetation, such as chaparral and grasslands, provides abundant fuel.&nbsp;



Furthermore, Southern California’s growing urban footprint increases the risk of fires igniting due to human activity, while also placing more people and infrastructure in harm’s way.&nbsp;



Climate change intensifies these challenges by extending fire seasons and increasing the frequency of extreme heat and drought events, creating a feedback loop that makes wildfires increasingly destructive.



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Image Credit: ESA&nbsp;



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Explosive wildfires in California fueled by hurricane-force winds

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 by a crew member onboard the International Space Station. 



“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.&nbsp;



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

The ocean, which covers 70% of Earth’s surface, is reaching unprecedented high temperatures - not just at the surface but throughout the upper 2,000 meters (6,561 feet).



A new study led by Lijing Cheng, a professor in the <a href="http://english.iap.cas.cn/" target="_blank" rel="noreferrer noopener">Institute of Atmospheric Physics</a> at the Chinese Academy of Sciences, brings this alarming fact into sharp focus.



“The broken records in the ocean have become a broken record,”&nbsp;said Professor Cheng, who led a research team of 54 scientists from seven countries.



The research highlights the critical role ocean warming plays in shaping life on Earth and the climate’s future trajectory.



<h2 class="wp-block-heading" id="h-ocean-s-role-in-climate-change">Ocean's role in climate change </h2>



The ocean plays a critical role in Earth's climate system by acting as its primary heat reservoir. It absorbs 90% of the <a href="https://www.earth.com/news/2024-confirmed-as-earths-hottest-year-in-recorded-history/" target="_blank" rel="noreferrer noopener">excess heat generated by global warming</a>, helping to regulate global weather patterns. 



This regulation occurs as the ocean transfers heat and moisture into the atmosphere, influencing everything from rainfall to storm intensity.



“To know what is happening to the climate, the answer is in the ocean,”&nbsp;explained Professor John Abraham from the <a href="https://www.stthomas.edu" target="_blank" rel="noreferrer noopener">University of St. Thomas</a>, emphasizing the ocean's central role in understanding climate changes.



<h2 class="wp-block-heading" id="h-troubling-trend-in-the-ocean">Troubling trend in the ocean</h2>



Research from three international teams confirmed a troubling trend: ocean heat content (OHC) reached record levels in 2024. The data shows that the upper layers of the ocean continue to absorb unprecedented amounts of heat.



From 2023 to 2024 alone, ocean heat content increased by a staggering 16 zettajoules (ZJ). To put this in perspective, this is roughly 140 times the total electricity generated by the entire world in 2023. 



This dramatic rise emphasizes the steady and dangerous warming of the planet’s oceans.



<h2 class="wp-block-heading" id="h-consequences-of-ocean-warming">Consequences of ocean warming </h2>



Ongoing ocean warming has profound <a href="https://www.earth.com/news/ocean-warming-is-subtly-changing-the-tides/" target="_blank" rel="noreferrer noopener">consequences for weather</a>, ecosystems, and human life. 



Regional variations in warming highlight areas such as the Atlantic, Mediterranean, and mid-latitude Southern Ocean, where temperatures are rising rapidly. Polar regions are also absorbing significant heat, exacerbating ice melt and global sea level rise.



Warmer ocean waters amplify extreme weather by increasing atmospheric water vapor - a powerful greenhouse gas. This phenomenon intensifies storms, droughts, wildfires, and flooding events.



“The main way the ocean continues to influence the climate is through accompanying increases in water vapor in the atmosphere,”&nbsp;explained Dr. Kevin Trenberth from the <a href="https://ncar.ucar.edu" target="_blank" rel="noreferrer noopener">National Center for Atmospheric Research</a>. 



The result is a vicious cycle of climate extremes, including hurricanes, typhoons, and record heatwaves.



<h2 class="wp-block-heading" id="h-intensifying-impacts-of-ocean-warming">Intensifying impacts of ocean warming</h2>



Over the past year, 104 countries experienced their hottest temperatures on record, highlighting the growing impact of <a href="https://www.earth.com/news/plankton-at-risk-global-warming-threatens-the-oceans-lifeline/" target="_blank" rel="noreferrer noopener">global warming</a>. 



This rise in heat has fueled catastrophic weather events worldwide. Heatwaves, droughts, floods, and wildfires have caused devastation across regions including Africa, Asia, Europe, and the Americas. These events have inflicted widespread damage to communities, economies, and ecosystems.



In the United States, climate-related disasters have been particularly costly. Since 1980, such events have led to nearly $3 trillion in damages, illustrating the significant economic burden of a warming climate.



The rise in ocean surface temperatures plays a critical role in amplifying these impacts. 



<h2 class="wp-block-heading" id="h-dramatic-rise-in-ocean-warming">Dramatic rise in ocean warming </h2>



Surface waters, where the ocean interacts with the atmosphere, transfer heat and moisture, fueling extreme weather events.



Since the 1950s, these temperatures have risen dramatically, with far-reaching consequences for marine ecosystems and coastal communities. 



Warmer waters disrupt marine life, erode coastal habitats, and increase the frequency and intensity of storms, making the situation even more urgent.



<h2 class="wp-block-heading" id="h-ocean-warming-warns-of-planetary-danger">Ocean warming warns of planetary danger</h2>



Dr. Karina von Schuckmann from <a href="https://www.mercator-ocean.eu/en/" target="_blank" rel="noreferrer noopener">Mercator Ocean International</a> described the ocean as a sentinel for <a href="https://www.earth.com/news/2024-shatters-heat-records-earths-hottest-year-is-here/" target="_blank" rel="noreferrer noopener">planetary warming</a>.&nbsp;“The ocean is our sentinel for planetary warming, acting as the major sink of surplus heat,”&nbsp;she emphasized.



If immediate action to combat climate change is not taken, the consequences will grow increasingly severe. Rising costs, damages, and loss of life demand urgent mitigation efforts to slow warming and protect our planet's future.



The findings of the study serve as a critical reminder: addressing ocean warming is essential to safeguarding Earth’s climate and humanity's future.



The study is published in the journal <a href="https://link.springer.com/article/10.1007/s00376-025-4541-3" target="_blank" rel="noreferrer noopener">Advances in Atmospheric Sciences</a>.



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Record ocean warming in 2024 is a warning for our planet

The ocean, which covers 70% of Earth’s surface, is reaching...

Time,And,Space.,3d,Rendering,Illustration

Time feels so obvious that we rarely question its existence. Our clocks tick, we sense the hours passing, and we connect events to a single timeline. Yet, in many corners of theoretical physics, the very notion of time as a forward-moving entity is under scrutiny.



Some researchers claim that time may not exist in any fundamental way. They argue that our deeply held belief in a flowing “now” might be a trick of perception.



<h2 class="wp-block-heading" id="h-time-illusions-in-daily-life">Time illusions in daily life</h2>



Our daily life depends on the past, present, and future being well-defined. We pay bills on time. We set our alarms to wake up in the morning.&nbsp;



“The equations of physics do not tell us which events are occurring right now,” is an unsettling statement for <a href="https://www.nature.com/articles/d41586-018-04558-7" target="_blank" rel="noreferrer noopener">scientists</a> to make. 



That remark highlights the gap between how we sense time and how modern equations describe it.



This perspective on timelessness has gained traction through work from many theoretical physicists, including <a href="https://www.cpt.univ-mrs.fr/~rovelli/" target="_blank" rel="noreferrer noopener">Dr. Carlo Rovelli</a> a theoretical physicist and Emeritus Professor at the Centre de Physique Théorique (<a href="https://www.cpt.univ-mrs.fr/" target="_blank" rel="noreferrer noopener">CPT</a>) of Aix-Marseille University in France. 



Dr. Rovelli has developed approaches in loop <a href="https://www.earth.com/news/central-theory-of-quantum-gravity-is-modeled-in-the-laboratory/" target="_blank" rel="noreferrer noopener">quantum gravity</a> that often do away with a global time parameter.



<h2 class="wp-block-heading" id="h-time-physics-and-intuition">Time, physics, and intuition</h2>



Our intuitions tell us the present moment is distinct, while the future feels open and the past seems fixed. However, Einstein’s theories suggest that all moments could be equally real, leaving <a href="https://www.earth.com/news/negative-time-observed-measured-tangible-in-new-quantum-experiments/" target="_blank" rel="noreferrer noopener">no universal present</a>.&nbsp;



Researchers have shown that gravity can slow clocks. So, for instance, time passes a little bit slower at sea level compared to the top of a mountain, because you’re a bit closer to Earth’s gravity.



It’s relative, meaning that time can move differently depending on how fast you’re moving or how close you are to a strong gravitational field. 



Although we don’t experience this effect in our daily routines, <a href="https://www.science.org/doi/10.1126/science.177.4044.168" target="_blank" rel="noreferrer noopener">atomic clocks confirm it</a>. Such experiments show that time intervals can vary depending on speed and gravitational fields.



<h2 class="wp-block-heading" id="h-a-sense-of-flow-in-time-s-existence">A sense of flow in time's existence</h2>



If we listen to our everyday instincts, time seems to rush onward, dragging events from future to past. 



Yet in general relativity, there is no built-in rule mandating a <a href="https://www.scientificamerican.com/article/that-mysterious-flow/" target="_blank" rel="noreferrer noopener">universal flow</a>. Instead, many physicists say that our brains layer the experience of flow on top of an otherwise static reality.&nbsp;



Some propose that what we call the “flow of time” emerges from correlations among physical objects. 



Our stories and memories might be responsible for building a chain of events we label “before” and “after.”



<h2 class="wp-block-heading" id="h-einstein-and-our-understanding-of-time">Einstein and our understanding of time</h2>



<a href="https://www.earth.com/news/radical-new-theory-finally-unites-gravity-spacetime-and-the-quantum-realm/" target="_blank" rel="noreferrer noopener">Albert Einstein’s theories</a>, particularly his theory of relativity, revolutionized how we think about time. In his special theory of relativity, published in 1905, he proposed that time isn’t the same for everyone. 



For example, if you’re traveling at a very high speed or near a massive object like a planet, time will seem to pass more slowly for you compared to someone who’s farther away from the gravitational pull or moving more slowly. 



This concept is often called "time dilation," and it’s been proven in experiments with fast-moving particles and GPS satellites.



In his general theory of relativity, which he published in 1915, Einstein expanded this idea by showing how <a href="https://www.earth.com/news/matter-spacetime-gravitational-waves-fabric-of-the-universe/" target="_blank" rel="noreferrer noopener">gravity can also affect time</a>. The stronger the gravitational field, the more it slows down time.



These theories completely changed our understanding of time - it’s not a constant, unchanging backdrop to everything that happens. Instead, it’s flexible and can stretch, bend, and warp depending on the circumstances. 



<h2 class="wp-block-heading" id="h-quantum-twists-on-time-s-existence">Quantum twists on time's existence</h2>



<a href="https://www.earth.com/news/quantum-entanglement-a-simple-way-to-grasp-this-impossible-concept-carl-kocher/" target="_blank" rel="noreferrer noopener">Quantum mechanics</a> complicates matters further. Traditional formulations treat time as an absolute parameter, ticking away while particles hop between possible states.&nbsp;



Yet quantum experiments suggest that no single observer can pin down a universal “right now.” Some scientists try to eliminate time altogether in their unified theories.&nbsp;



<a href="https://en.wikipedia.org/wiki/Wheeler%E2%80%93DeWitt_equation" target="_blank" rel="noreferrer noopener">The Wheeler-DeWitt equation</a>, for instance, famously omits time when describing quantum gravity. Instead of describing how the universe evolves, the equation focuses on correlations between different parts of a whole.&nbsp;



Time becomes something that emerges when observers carve out local “clocks” from the timeless fabric.



<h2 class="wp-block-heading" id="h-chasing-the-arrow">Chasing the arrow</h2>



Despite the insistence that time might be illusory, we still sense an arrow pointing from the past to the future. We watch eggs break rather than un-break, and we see coffee and milk mix rather than un-mix.



This brings us to the relationship of time to entropy, which is a measure of disorder or randomness in a system. 



According to the second law of thermodynamics, entropy in an isolated system always tends to increase over time. In simple terms, things naturally move <a href="https://www.earth.com/news/why-the-universe-remains-predictable-insights-from-quantum-mechanics/" target="_blank" rel="noreferrer noopener">from order to disorder</a>.



This means that the flow of time is often associated with the increase in entropy, which is why we perceive time as always moving forward, from past to present to future - <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC7516914/" target="_blank" rel="noreferrer noopener">the arrow of time</a>. 



Low-entropy conditions at the birth of the universe set the stage for irreversible processes. In that sense, the arrow we chase is not woven into time itself. It emerges from a statistical trend toward disorder, giving us the impression that events line up from earlier to later.



<h2 class="wp-block-heading" id="h-human-minds-and-the-existence-of-time">Human minds and the existence of time</h2>



Some experts suspect that one day we’ll see <a href="https://www.earth.com/news/do-we-actually-benefit-from-daylight-saving-time/" target="_blank" rel="noreferrer noopener">time</a> similar to how we see currency: a clever accounting device rather than a fundamental element of reality. 



Even so, humans will keep living as though each new moment actually matters. 



Our hearts beat in seconds, our schedules rely on hours, and we navigate our days convinced that "tomorrow" has not happened yet.



Regardless of whether time's existence is an illusion, a by-product of thermodynamics, or an emergent property of <a href="https://www.earth.com/news/quantum-entanglement-spooky-action-at-a-distance-persists-between-top-quarks/" target="_blank" rel="noreferrer noopener">deeper laws</a>, we remain anchored in our daily routines.



Perhaps the biggest puzzle isn’t whether time exists but why our brains are so attached to the notion that it flows without pausing, and why we find it so hard to let go of that idea.



Will our brains one day evolve to the point where we understand the true nature of time? Only time will tell.



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"Time is an illusion" and doesn't exist as we know it, according to many physicists

Time feels so obvious that we rarely question its existence....

Many people imagine Earth’s interior mantle as separate layers stacked on top of each other, like a layered cake, with each layer representing a plate. In reality, those internal zones are complex and often full of surprises.



Seismologists have relied on specific types of earthquake waves to learn about Earth's subsurface, but now a different technique is painting a far more detailed picture.



This fresh perspective has led scientists to wonder if there is hidden material in places once believed to be empty.



<h2 class="wp-block-heading" id="h-understanding-earth-s-mantle-the-basics">Understanding Earth's mantle - the basics</h2>



Earth’s mantle is the thick layer of rock that lies between the planet's crust and its core. It stretches about 1,800 miles (2,900 kilometers) deep, making up around 84% of Earth's total volume. 



The mantle is primarily composed of silicate minerals rich in iron and magnesium, and it's mostly solid, but it behaves like a thick, slow-flowing fluid over long periods of time. 



This flow is what drives the movement of tectonic plates on Earth's surface, <a href="https://www.earth.com/news/can-we-detect-major-earthquakes-months-in-advance/" target="_blank" rel="noreferrer noopener">causing earthquakes</a>, volcanic eruptions, and the shifting of continents. 



Heat from the Earth’s core causes <a href="https://www.earth.com/news/earths-inner-core-rotation-is-slowing-down-making/" target="_blank" rel="noreferrer noopener">convection currents</a> in the mantle, where hot material rises, cools near the crust, and then sinks back down, creating a continuous cycle. This process plays a key role in shaping the planet's surface.



<h2 class="wp-block-heading" id="h-tectonic-plates-in-earth-s-mantle">Tectonic plates in Earth's mantle</h2>



The discovery stems from the use of a high-resolution method called <a href="https://library.seg.org/doi/10.1190/1.9781560803027.entry6">full-waveform inversion</a>. Scientists use this approach to interpret every type of <a href="https://manoa.hawaii.edu/exploringourfluidearth/physical/ocean-floor/layers-earth/compare-contrast-connect-seismic-waves-and-determining-earth-s-structure#">seismic wave</a> produced by earthquakes, rather than focusing on only one kind.



Because of that, they can build a more precise model of <a href="https://www.earth.com/news/earths-crust-is-dripping-under-turkey/" target="_blank" rel="noreferrer noopener">Earth’s internal structures</a>.&nbsp;



After applying this method to the lower mantle, researchers saw pockets that appear to be leftover plate fragments in areas with no known history of subduction. 



Following their analysis, they were startled by just how common these hidden anomalies seemed to be.



This work was led by a team that includes doctoral student <a href="https://www.geology.ethz.ch/people/person-detail.Mjc3OTM4.TGlzdC82NjksNTE5NzQ3MzU0.html" target="_blank" rel="noreferrer noopener">Thomas Schouten</a> from the <a href="https://www.geology.ethz.ch/" target="_blank" rel="noreferrer noopener">Geological Institute of ETH Zurich</a>, who collaborated with experts from the <a href="https://www.caltech.edu/" target="_blank" rel="noreferrer noopener">California Institute of Technology</a>.



Their combined efforts brought fresh insights that challenge assumptions about where old tectonic plate remnants might reside in Earth.



<h2 class="wp-block-heading" id="h-interpreting-seismic-signals">Interpreting seismic signals</h2>



To understand how researchers got here, it helps to remember how seismic waves work. When an earthquake strikes, it sends waves radiating outward in all directions.



These waves bounce, bend, and shift as they travel through the planet. In much the same way that doctors use medical imaging techniques, geophysicists measure the time these waves take to reach various seismic stations around the globe.&nbsp;



<figure class="wp-block-image aligncenter size-full"><img src="https://www.earth.com/wp-content/uploads/2025/01/earth_lower-mantle_rock-zones_mysterious-sunken-worlds_credit-ETHZ_1s.webp" alt="Using a new model, researchers uncover zones in the Earth's lower mantle where seismic waves travel slower (red) or faster (blue). The large blue zone in the western Pacific (right above the center of the image) was previously unknown. Credit: Sebastian Noe / ETH Zurich" class="wp-image-1956322"/><figcaption class="wp-element-caption">Using a new model, researchers uncover zones in the Earth's lower mantle where seismic waves travel slower (red) or faster (blue). The large blue zone in the western Pacific (right above the center of the image) was previously unknown. Credit: Sebastian Noe / ETH Zurich</figcaption></figure>



The velocity of those signals reveals details about rock density and stiffness. In previous years, scientists relied heavily on <a href="https://pubs.geoscienceworld.org/ssa/bssa/article-abstract/108/5A/2894/546740/Generalized-Seismic-Phase-Detection-with-Deep?redirectedFrom=fulltext" target="_blank" rel="noreferrer noopener">particular seismic phases</a>. 



But by examining all available wave data instead, new shapes and densities were identified from Earth's lower <a href="https://www.earth.com/news/mantle-heat-shaped-earths-crust-3-billion-years-ago/" target="_blank" rel="noreferrer noopener">mantle</a>.



<h2 class="wp-block-heading" id="h-why-is-earth-s-mantle-important">Why is Earth's mantle important?</h2>



Over hundreds of millions of years, plates have formed, shifted, and sunk back into Earth’s interior. This <a href="https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/JB073i006p01959">cycling</a> plays a role in controlling phenomena like volcano formation, earthquakes, and the slow drift of continents.&nbsp;



Researchers have long known that slabs of subducted plates cluster under regions where one tectonic plate slides under another. 



So it came as a surprise when the new images revealed large slabs below oceans and continental interiors that lack a clear history of plate collisions.



That signals a possible complication in our understanding of how plates evolve and where they end up.



<h2 class="wp-block-heading" id="h-mysterious-plate-under-the-pacific-ocean">Mysterious plate under the Pacific Ocean</h2>



One of the biggest surprises was in a <a href="https://www.earth.com/news/ancient-sunken-oceans-discovered-between-earth-core-and-mantle/" target="_blank" rel="noreferrer noopener">zone</a> under the western Pacific. According to current plate tectonic timelines, there is no reason for old plate fragments to be there.&nbsp;



“Apparently, such zones in the Earth's mantle are much more widespread than previously thought,” said <a href="https://www.nature.com/articles/s41598-024-77399-2">Schouten</a>.



No geologic data points to historical subduction nearby. This indicates that the anomalies might not be chunks of plates at all, or at least not in the way scientists originally imagined.



<h2 class="wp-block-heading" id="h-could-it-be-something-else">Could it be something else?</h2>



Scientists now face questions about the origin and nature of these structures.



Some say they may be ancient, silica-rich pockets left over from the early <a href="https://www.earth.com/news/how-earths-mantle-shapes-surface-topography/" target="_blank" rel="noreferrer noopener">mantle</a>. Others suggest they might be iron-rich accumulations that have drifted over billions of years.&nbsp;



Schouten explained that the new model reveals anomalies throughout the Earth's interior, but the exact materials or plate fragments responsible for these patterns remain unclear. 



This uncertainty suggests a more diverse range of compositions in the Earth's mantle than previously understood.



<h2 class="wp-block-heading" id="h-next-steps-for-deeper-understanding">Next steps for deeper understanding</h2>



Full-waveform inversion is a promising tool for these investigations, but it offers only a view of how fast or slowly waves move through the material. 



Researchers say they need further refinement to tease out chemical and thermal differences. 



Some are turning to additional datasets, including electromagnetic signals and data from mineral physics experiments. 



Combining those methods might highlight whether these mantle “blobs” are from primordial origins, from recycled ocean crust, or from something else entirely.



<h2 class="wp-block-heading" id="h-implications-for-plate-tectonics">Implications for plate tectonics</h2>



If scientists confirm that more zones like these exist in Earth’s depths, they may have to adjust many theories about how heat moves through the planet. 



Such hidden zones might alter patterns of convection and the formation of mantle plumes.&nbsp;



The story of plate tectonics could also see updates, with new chapters on how plate fragments wander and transform in ways not previously documented. These discoveries remind us that <a href="https://www.earth.com/news/how-volcanic-hotspots-are-all-connected-to-earths-interior-mantle/" target="_blank" rel="noreferrer noopener">geoscience</a>, like any science, is never settled.



<h2 class="wp-block-heading" id="h-the-search-continues">The search continues</h2>



In the future, improved supercomputers may crunch even larger datasets to produce clearer images of Earth's lower mantle and its plate structures. That could resolve debates about the true nature of these mysterious anomalies.&nbsp;



By integrating various approaches - seismic, chemical, and computational - Earth scientists will keep uncovering pieces of our planet’s hidden complexity.



As Schouten’s team demonstrated, sometimes seeing the entire picture means looking beyond what we think we already know.



The study is published in <a href="https://www.nature.com/articles/s41598-024-77399-2" target="_blank" rel="noreferrer noopener">Scientific Reports</a>.



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'Sunken worlds' discovered under the Pacific ocean in Earth's mantle

Many people imagine Earth’s interior mantle as separate layers stacked...

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Today’s Video of the Day comes from <a href="https://www.tamu.edu/">Texas A&amp;M University</a> researchers who have developed a brand new model to predict power outages using big data. The model was crafted using a combination of weather forecasts, tree-trimming schedules, and various other risk data.
  &#8212;
By <a href="mailto:rarnold@earth.com">Rory Arnold</a>, <a href="https://www.earth.com/staff">Earth.com</a>
Credit: <a href="https://www.tamu.edu/">Texas A&amp;M University</a>

New model can predict power outages using big data