Image of the Day

Picture of the day Blue whale skeleton at the Central Hall of the Natural History Museum, London, England. ‘Hope’, nickname of the blue whale skeleton, is 25.2 metres (83 ft) long and is suspended from the ceiling since July 14th 2017. Blue whales are the largest creature ever to have lived in the Earth. In the 1800s there was an estimated amount of 250,000 blue whales across the world’s oceans. After decades of commercial hunting the species was to the brink of extinction, with only around 400 surviving in 1966. That year the world took action in London and decided to legally protect blue whales from commercial hunting. Since then the population of blue whales has steadily grown to its current level of around 20,000. #ImageOfTheDay
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Picture of the day Blue whale skeleton at the Central Hall of the Natural History Museum, London, England. ‘Hope’, nickname of the blue whale skeleton, is 25.2 metres (83 ft) long and is suspended from the ceiling since July 14th 2017. Blue whales are the largest creature ever to have lived in the Earth. In the 1800s there was an estimated amount of 250,000 blue whales across the world’s oceans. After decades of commercial hunting the species was to the brink of extinction, with only around 400 surviving in 1966. That year the world took action in London and decided to legally protect blue whales from commercial hunting. Since then the population of blue whales has steadily grown to its current level of around 20,000. #ImageOfTheDay

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Picture of the day
Blue whale skeleton at the Central Hall of the Natural History Museum, London, England. ‘Hope’, nickname of the blue whale skeleton, is 25.2 metres (83 ft) long and is suspended from the ceiling since July 14th 2017. Blue whales are the largest creature ever to have lived in the Earth. In the 1800s there was an estimated amount of 250,000 blue whales across the world’s oceans. After decades of commercial hunting the species was to the brink of extinction, with only around 400 surviving in 1966. That year the world took action in London and decided to legally protect blue whales from commercial hunting. Since then the population of blue whales has steadily grown to its current level of around 20,000.
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Best of 2025: Artemis II SLS (Space Launch System) Projected on Washington Monument – Images depicting NASA’s Space Launch System (SLS) rocket are projected onto the Washington Monument as part of an event to kick off the nation’s 250th birthday year, Wednesday, Dec. 31, 2025, in Washington.
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Best of 2025: Artemis II SLS (Space Launch System) Projected on Washington Monument – Images depicting NASA’s Space Launch System (SLS) rocket are projected onto the Washington Monument as part of an event to kick off the nation’s 250th birthday year, Wednesday, Dec. 31, 2025, in Washington.

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Images depicting NASA’s Space Launch System (SLS) rocket are projected onto the Washington Monument as part of an event to kick off the nation’s 250th birthday year, Wednesday, Dec. 31, 2025, in Washington.

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Best of 2025: Artemis II Countdown Demonstration Test – Artemis II crewmembers (left to right) NASA astronauts Christina Koch, mission specialist; and Victor Glover, pilot; CSA (Canadian Space Agency) astronaut Jeremy Hansen, mission specialist; and NASA astronaut Reid Wiseman, commander are led to the crew access arm as they prepare to board their Orion spacecraft atop NASA’s Space Launch System rocket during the Artemis II countdown demonstration test on Dec. 20, 2025.
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Best of 2025: Artemis II Countdown Demonstration Test – Artemis II crewmembers (left to right) NASA astronauts Christina Koch, mission specialist; and Victor Glover, pilot; CSA (Canadian Space Agency) astronaut Jeremy Hansen, mission specialist; and NASA astronaut Reid Wiseman, commander are led to the crew access arm as they prepare to board their Orion spacecraft atop NASA’s Space Launch System rocket during the Artemis II countdown demonstration test on Dec. 20, 2025.

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Artemis II crewmembers (left to right) NASA astronauts Christina Koch, mission specialist; and Victor Glover, pilot; CSA (Canadian Space Agency) astronaut Jeremy Hansen, mission specialist; and NASA astronaut Reid Wiseman, commander are led to the crew access arm as they prepare to board their Orion spacecraft atop NASA’s Space Launch System rocket during the Artemis II countdown demonstration test on Dec. 20, 2025.

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First Sky Map from NASA’s SPHEREx Observatory – NASA’s SPHEREx Observatory has mapped the entire sky in 102 infrared colors, as seen here in this image released on Dec. 18, 2025. This image features a selection of colors emitted primarily by stars (blue, green, and white), hot hydrogen gas (blue), and cosmic dust (red).
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First Sky Map from NASA’s SPHEREx Observatory – NASA’s SPHEREx Observatory has mapped the entire sky in 102 infrared colors, as seen here in this image released on Dec. 18, 2025. This image features a selection of colors emitted primarily by stars (blue, green, and white), hot hydrogen gas (blue), and cosmic dust (red).

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NASA’s SPHEREx Observatory has mapped the entire sky in 102 infrared colors, as seen here in this image released on Dec. 18, 2025. This image features a selection of colors emitted primarily by stars (blue, green, and white), hot hydrogen gas (blue), and cosmic dust (red).

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Scientific Balloon Begins Antarctic Ascent – A scientific balloon starts its ascent into the air as it prepares to launch carrying NASA’s Payload for Ultrahigh Energy Observations (PUEO) mission. The mission lifted off from Antarctica at 5:56 a.m. NZST, Saturday, Dec. 20 (11:56 a.m., Friday, Dec. 19 in U.S. Eastern Time). The PUEO mission is designed to detect radio signals created when highly energetic particles called neutrinos from space hit the ice.
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Scientific Balloon Begins Antarctic Ascent – A scientific balloon starts its ascent into the air as it prepares to launch carrying NASA’s Payload for Ultrahigh Energy Observations (PUEO) mission. The mission lifted off from Antarctica at 5:56 a.m. NZST, Saturday, Dec. 20 (11:56 a.m., Friday, Dec. 19 in U.S. Eastern Time). The PUEO mission is designed to detect radio signals created when highly energetic particles called neutrinos from space hit the ice.

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A scientific balloon starts its ascent into the air as it prepares to launch carrying NASA’s Payload for Ultrahigh Energy Observations (PUEO) mission. The mission lifted off from Antarctica at 5:56 a.m. NZST, Saturday, Dec. 20 (11:56 a.m., Friday, Dec. 19 in U.S. Eastern Time). The PUEO mission is designed to detect radio signals created when highly energetic particles called neutrinos from space hit the ice.

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Curiosity Sends Holiday Postcard from Mars – NASA’s Curiosity Mars rover used its black-and-white navigation cameras to capture panoramas at two times of day on Nov. 18, 2025, spanning periods that occurred on both the 4,722nd and 4,723rd Martian days, or sols, of the mission. The panoramas were captured at 4:15 p.m. on Sol 4,722 and 8:20 a.m. on Sol 4,723 (both at local Mars time), then merged together. Color was later added for an artistic interpretation of the scene with blue representing the morning panorama and yellow representing the afternoon one.
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Curiosity Sends Holiday Postcard from Mars – NASA’s Curiosity Mars rover used its black-and-white navigation cameras to capture panoramas at two times of day on Nov. 18, 2025, spanning periods that occurred on both the 4,722nd and 4,723rd Martian days, or sols, of the mission. The panoramas were captured at 4:15 p.m. on Sol 4,722 and 8:20 a.m. on Sol 4,723 (both at local Mars time), then merged together. Color was later added for an artistic interpretation of the scene with blue representing the morning panorama and yellow representing the afternoon one.

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NASA’s Curiosity Mars rover used its black-and-white navigation cameras to capture panoramas at two times of day on Nov. 18, 2025, spanning periods that occurred on both the 4,722nd and 4,723rd Martian days, or sols, of the mission. The panoramas were captured at 4:15 p.m. on Sol 4,722 and 8:20 a.m. on Sol 4,723 (both at local Mars time), then merged together. Color was later added for an artistic interpretation of the scene with blue representing the morning panorama and yellow representing the afternoon one.

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Picture of the day View of coastline northwest from above Manarola: fields and steep trail to Volastra in foreground, Corniglia Station and town centre, north to Punta Mesco. Depicts the north half of Cinque Terre National Park coastline. Liguria, Italy #ImageOfTheDay
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Picture of the day View of coastline northwest from above Manarola: fields and steep trail to Volastra in foreground, Corniglia Station and town centre, north to Punta Mesco. Depicts the north half of Cinque Terre National Park coastline. Liguria, Italy #ImageOfTheDay

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Picture of the day
View of coastline northwest from above Manarola: fields and steep trail to Volastra in foreground, Corniglia Station and town centre, north to Punta Mesco. Depicts the north half of Cinque Terre National Park coastline. Liguria, Italy
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Studying Physics in Microgravity – Tiny ball bearings surround a larger central bearing during the Fluid Particles experiment, conducted inside the Microgravity Science Glovebox (MSG) aboard the International Space Station’s Destiny laboratory module.
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Studying Physics in Microgravity – Tiny ball bearings surround a larger central bearing during the Fluid Particles experiment, conducted inside the Microgravity Science Glovebox (MSG) aboard the International Space Station’s Destiny laboratory module.

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Tiny ball bearings surround a larger central bearing during the Fluid Particles experiment, conducted inside the Microgravity Science Glovebox (MSG) aboard the International Space Station’s Destiny laboratory module.

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Picture of the day Short-nosed unicornfish (Naso brevirostris), Red Sea, Egypt. This species has a maximum published total length of 60 centimetres (24 in). It occurs in the Indian and western Pacific Oceans. Adults feed mainly on gelatinous zooplankton, while juveniles mainly feed on benthic algae. The switch from grazing to preying on gelatinous zooplankton coincides with the development of the bony protuberance. #ImageOfTheDay
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Picture of the day Short-nosed unicornfish (Naso brevirostris), Red Sea, Egypt. This species has a maximum published total length of 60 centimetres (24 in). It occurs in the Indian and western Pacific Oceans. Adults feed mainly on gelatinous zooplankton, while juveniles mainly feed on benthic algae. The switch from grazing to preying on gelatinous zooplankton coincides with the development of the bony protuberance. #ImageOfTheDay

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Picture of the day
Short-nosed unicornfish (Naso brevirostris), Red Sea, Egypt. This species has a maximum published total length of 60 centimetres (24 in). It occurs in the Indian and western Pacific Oceans. Adults feed mainly on gelatinous zooplankton, while juveniles mainly feed on benthic algae. The switch from grazing to preying on gelatinous zooplankton coincides with the development of the bony protuberance.
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Santa Visits Artemis II Rocket – NASA engineer Guy Naylor poses for a photograph wearing a custom Santa Claus suit on the 19th level of High Bay 4 inside the Vehicle Assembly Building with NASA’s integrated Moon rocket behind him at the agency’s Kennedy Space Center in Florida on Thursday, Dec. 11, 2025.
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Santa Visits Artemis II Rocket – NASA engineer Guy Naylor poses for a photograph wearing a custom Santa Claus suit on the 19th level of High Bay 4 inside the Vehicle Assembly Building with NASA’s integrated Moon rocket behind him at the agency’s Kennedy Space Center in Florida on Thursday, Dec. 11, 2025.

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NASA engineer Guy Naylor poses for a photograph wearing a custom Santa Claus suit on the 19th level of High Bay 4 inside the Vehicle Assembly Building with NASA’s integrated Moon rocket behind him at the agency’s Kennedy Space Center in Florida on Thursday, Dec. 11, 2025.

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Artemis II Crew Launch Day Rehearsal – From left to right, CSA (Canadian Space Agency) astronaut Jeremy Hansen and NASA astronauts Christina Koch, Victor Glover, and Reid Wiseman are seen as they depart the Neil A. Armstrong Operations and Checkout Building to board their Orion spacecraft atop NASA’s Space Launch System rocket inside the Vehicle Assembly Building as part of the Artemis II countdown demonstration test, Saturday, Dec. 20, 2025, at NASA’s Kennedy Space Center in Florida.
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Artemis II Crew Launch Day Rehearsal – From left to right, CSA (Canadian Space Agency) astronaut Jeremy Hansen and NASA astronauts Christina Koch, Victor Glover, and Reid Wiseman are seen as they depart the Neil A. Armstrong Operations and Checkout Building to board their Orion spacecraft atop NASA’s Space Launch System rocket inside the Vehicle Assembly Building as part of the Artemis II countdown demonstration test, Saturday, Dec. 20, 2025, at NASA’s Kennedy Space Center in Florida.

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From left to right, CSA (Canadian Space Agency) astronaut Jeremy Hansen and NASA astronauts Christina Koch, Victor Glover, and Reid Wiseman are seen as they depart the Neil A. Armstrong Operations and Checkout Building to board their Orion spacecraft atop NASA’s Space Launch System rocket inside the Vehicle Assembly Building as part of the Artemis II countdown demonstration test, Saturday, Dec. 20, 2025, at NASA’s Kennedy Space Center in Florida.

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A Dance of Galaxies – These two galaxies are named NGC 4490 and NGC 4485, and they’re located about 24 million light-years away in the constellation Canes Venatici (The Hunting Dogs). They are the closest known interacting dwarf-dwarf galaxy system where astronomers have observed the interactions between them, as well as been able to resolve the stars within.
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A Dance of Galaxies – These two galaxies are named NGC 4490 and NGC 4485, and they’re located about 24 million light-years away in the constellation Canes Venatici (The Hunting Dogs). They are the closest known interacting dwarf-dwarf galaxy system where astronomers have observed the interactions between them, as well as been able to resolve the stars within.

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These two galaxies are named NGC 4490 and NGC 4485, and they’re located about 24 million light-years away in the constellation Canes Venatici (The Hunting Dogs). They are the closest known interacting dwarf-dwarf galaxy system where astronomers have observed the interactions between them, as well as been able to resolve the stars within.

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NASA Lab Completes Engine Checks on New Aircraft – Justin Hall, left, controls a subscale aircraft as Justin Link holds the aircraft in place during preliminary engine tests on Friday, Sept. 12, 2025, at NASA’s Armstong Flight Research Center in Edwards, California. Hall is chief pilot at the center’s Dale Reed Subscale Flight Research Laboratory and Link is a pilot for small uncrewed aircraft systems.
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NASA Lab Completes Engine Checks on New Aircraft – Justin Hall, left, controls a subscale aircraft as Justin Link holds the aircraft in place during preliminary engine tests on Friday, Sept. 12, 2025, at NASA’s Armstong Flight Research Center in Edwards, California. Hall is chief pilot at the center’s Dale Reed Subscale Flight Research Laboratory and Link is a pilot for small uncrewed aircraft systems.

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Justin Hall, left, controls a subscale aircraft as Justin Link holds the aircraft in place during preliminary engine tests on Friday, Sept. 12, 2025, at NASA’s Armstong Flight Research Center in Edwards, California. Hall is chief pilot at the center’s Dale Reed Subscale Flight Research Laboratory and Link is a pilot for small uncrewed aircraft systems.

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Picture of the day Mountaineers descending into Chola Valley, 5,200 metres (17,100 ft) a. s. l., in good weather conditions, with a panoramic view over snow-capped Himalayan peaks to the south of the Great Himalayan Range in Mahalangur Himal, Nepal, Himalayas. Today is International Mountain Day. #ImageOfTheDay
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Picture of the day Mountaineers descending into Chola Valley, 5,200 metres (17,100 ft) a. s. l., in good weather conditions, with a panoramic view over snow-capped Himalayan peaks to the south of the Great Himalayan Range in Mahalangur Himal, Nepal, Himalayas. Today is International Mountain Day. #ImageOfTheDay

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Picture of the day
Mountaineers descending into Chola Valley, 5,200 metres (17,100 ft) a. s. l., in good weather conditions, with a panoramic view over snow-capped Himalayan peaks to the south of the Great Himalayan Range in Mahalangur Himal, Nepal, Himalayas. Today is International Mountain Day.
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Massive Stars Make Their Mark in Hubble Image – This NASA/ESA Hubble Space Telescope image features the blue dwarf galaxy Markarian 178 (Mrk 178) against a backdrop of distant galaxies in all shapes and sizes. Some of these distant galaxies even shine through the diffuse edges of Mrk 178.
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Massive Stars Make Their Mark in Hubble Image – This NASA/ESA Hubble Space Telescope image features the blue dwarf galaxy Markarian 178 (Mrk 178) against a backdrop of distant galaxies in all shapes and sizes. Some of these distant galaxies even shine through the diffuse edges of Mrk 178.

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This NASA/ESA Hubble Space Telescope image features the blue dwarf galaxy Markarian 178 (Mrk 178) against a backdrop of distant galaxies in all shapes and sizes. Some of these distant galaxies even shine through the diffuse edges of Mrk 178.

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Peekaboo! – Clockwise from left, JAXA (Japan Aerospace Exploration Agency) astronaut Kimiya Yui and NASA astronauts Jonny Kim, Zena Cardman, and Mike Fincke pose for a playful portrait through a circular opening in a hatch thermal cover aboard the International Space Station on Sept. 18, 2025.
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Peekaboo! – Clockwise from left, JAXA (Japan Aerospace Exploration Agency) astronaut Kimiya Yui and NASA astronauts Jonny Kim, Zena Cardman, and Mike Fincke pose for a playful portrait through a circular opening in a hatch thermal cover aboard the International Space Station on Sept. 18, 2025.

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Clockwise from left, JAXA (Japan Aerospace Exploration Agency) astronaut Kimiya Yui and NASA astronauts Jonny Kim, Zena Cardman, and Mike Fincke pose for a playful portrait through a circular opening in a hatch thermal cover aboard the International Space Station on Sept. 18, 2025.

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Picture of the day St. Nicholas the Wonderworker Church (1766) was relocated from the village of Glotovo, Vladimir Oblast to the Museum of Wooden Architecture at the Kremlin in Suzdal, Russia. Today is Saint Nicholas Day in much of Eastern and Western Christianity. #ImageOfTheDay
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Picture of the day St. Nicholas the Wonderworker Church (1766) was relocated from the village of Glotovo, Vladimir Oblast to the Museum of Wooden Architecture at the Kremlin in Suzdal, Russia. Today is Saint Nicholas Day in much of Eastern and Western Christianity. #ImageOfTheDay

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Picture of the day
St. Nicholas the Wonderworker Church (1766) was relocated from the village of Glotovo, Vladimir Oblast to the Museum of Wooden Architecture at the Kremlin in Suzdal, Russia. Today is Saint Nicholas Day in much of Eastern and Western Christianity.
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The Calabash clash – The Calabash Nebula, pictured here — which has the technical name OH 231.8+04.2 — is a spectacular example of the death of a low-mass star like the Sun. This image taken by the NASA/ESA Hubble Space Telescope shows the star going through a rapid transformation from a red giant to a planetary nebula, during which it blows its outer layers of gas and dust out into the surrounding space. The recently ejected material is spat out in opposite directions with immense speed — the gas shown in yellow is moving close to a million kilometres an hour. Astronomers rarely capture a star in this phase of its evolution because it occurs within the blink of an eye — in astronomical terms. Over the next thousand years the nebula is expected to evolve into a fully fledged planetary nebula. The nebula is also known as the Rotten Egg Nebula because it contains a lot of sulphur, an element that, when combined with other elements, smells like a rotten egg — but luckily, it resides over 5000 light-years away in the constellation of Puppis (The Poop deck).
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The Calabash clash – The Calabash Nebula, pictured here — which has the technical name OH 231.8+04.2 — is a spectacular example of the death of a low-mass star like the Sun. This image taken by the NASA/ESA Hubble Space Telescope shows the star going through a rapid transformation from a red giant to a planetary nebula, during which it blows its outer layers of gas and dust out into the surrounding space. The recently ejected material is spat out in opposite directions with immense speed — the gas shown in yellow is moving close to a million kilometres an hour. Astronomers rarely capture a star in this phase of its evolution because it occurs within the blink of an eye — in astronomical terms. Over the next thousand years the nebula is expected to evolve into a fully fledged planetary nebula. The nebula is also known as the Rotten Egg Nebula because it contains a lot of sulphur, an element that, when combined with other elements, smells like a rotten egg — but luckily, it resides over 5000 light-years away in the constellation of Puppis (The Poop deck).

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The Calabash Nebula, pictured here — which has the technical name OH 231.8+04.2 — is a spectacular example of the death of a low-mass star like the Sun. This image taken by the NASA/ESA Hubble Space Telescope shows the star going through a rapid transformation from a red giant to a planetary nebula, during which it blows its outer layers of gas and dust out into the surrounding space. The recently ejected material is spat out in opposite directions with immense speed — the gas shown in yellow is moving close to a million kilometres an hour. Astronomers rarely capture a star in this phase of its evolution because it occurs within the blink of an eye — in astronomical terms. Over the next thousand years the nebula is expected to evolve into a fully fledged planetary nebula. The nebula is also known as the Rotten Egg Nebula because it contains a lot of sulphur, an element that, when combined with other elements, smells like a rotten egg — but luckily, it resides over 5000 light-years away in the constellation of Puppis (The Poop deck).

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Stellar Jet – Webb’s image of the enormous stellar jet in Sh2-284 provides evidence that protostellar jets scale with the mass of their parent stars—the more massive the stellar engine driving the plasma, the larger the resulting jet.
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Stellar Jet – Webb’s image of the enormous stellar jet in Sh2-284 provides evidence that protostellar jets scale with the mass of their parent stars—the more massive the stellar engine driving the plasma, the larger the resulting jet.

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Webb’s image of the enormous stellar jet in Sh2-284 provides evidence that protostellar jets scale with the mass of their parent stars—the more massive the stellar engine driving the plasma, the larger the resulting jet.

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NASA Astronaut Jonny Kim Returns to Earth – The Soyuz MS-27 spacecraft is seen as it lands in a remote area near the town of Zhezkazgan, Kazakhstan with Expedition 73 NASA astronaut Jonny Kim, and Roscosmos cosmonauts Sergey Ryzhikov and Alexey Zubritsky aboard, Tuesday, Dec. 9, 2025.
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NASA Astronaut Jonny Kim Returns to Earth – The Soyuz MS-27 spacecraft is seen as it lands in a remote area near the town of Zhezkazgan, Kazakhstan with Expedition 73 NASA astronaut Jonny Kim, and Roscosmos cosmonauts Sergey Ryzhikov and Alexey Zubritsky aboard, Tuesday, Dec. 9, 2025.

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The Soyuz MS-27 spacecraft is seen as it lands in a remote area near the town of Zhezkazgan, Kazakhstan with Expedition 73 NASA astronaut Jonny Kim, and Roscosmos cosmonauts Sergey Ryzhikov and Alexey Zubritsky aboard, Tuesday, Dec. 9, 2025.

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Picture of the day Fortified city of Carcassonne during the blue hour, France. Founded during the Gallo-Roman period, the citadel derives its reputation from its 3 kilometres (1.9 mi) long double surrounding walls interspersed by 52 towers. The medieval citadel, situated on a hill on the right bank of the river Aude, was restored at the end of the 19th century by the theorist and architect Eugène Viollet-le-Duc. In 1997, it was added to the UNESCO list of World Heritage Sites because of its exceptional testimony to the architecture and planning of a medieval fortress town. #ImageOfTheDay
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Picture of the day Fortified city of Carcassonne during the blue hour, France. Founded during the Gallo-Roman period, the citadel derives its reputation from its 3 kilometres (1.9 mi) long double surrounding walls interspersed by 52 towers. The medieval citadel, situated on a hill on the right bank of the river Aude, was restored at the end of the 19th century by the theorist and architect Eugène Viollet-le-Duc. In 1997, it was added to the UNESCO list of World Heritage Sites because of its exceptional testimony to the architecture and planning of a medieval fortress town. #ImageOfTheDay

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Picture of the day
Fortified city of Carcassonne during the blue hour, France. Founded during the Gallo-Roman period, the citadel derives its reputation from its 3 kilometres (1.9 mi) long double surrounding walls interspersed by 52 towers. The medieval citadel, situated on a hill on the right bank of the river Aude, was restored at the end of the 19th century by the theorist and architect Eugène Viollet-le-Duc. In 1997, it was added to the UNESCO list of World Heritage Sites because of its exceptional testimony to the architecture and planning of a medieval fortress town.
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Sprites Over Château de Beynac – A flash of lightning, and then—something else. High above a storm, a crimson figure blinks in and out of existence. If you see it, you are a lucky witness of a sprite, one of the least-understood electrical phenomena in Earth’s upper atmosphere.
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Sprites Over Château de Beynac – A flash of lightning, and then—something else. High above a storm, a crimson figure blinks in and out of existence. If you see it, you are a lucky witness of a sprite, one of the least-understood electrical phenomena in Earth’s upper atmosphere.

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A flash of lightning, and then—something else. High above a storm, a crimson figure blinks in and out of existence. If you see it, you are a lucky witness of a sprite, one of the least-understood electrical phenomena in Earth’s upper atmosphere.

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