stars

Picture of the day MACS 2129-1 Galactic Graveyard: “This chillingly haunted galaxy mysteriously stopped making stars only a few billion years after the Big Bang! It became a cosmic cemetery, illuminated by the red glow of decaying stars. Dare to enter, and you might encounter the frightening corpses of exoplanets or the final death throes of once-mighty stars.” NASA Exoplanet Exploration Halloween poster 2020. #ImageOfTheDay

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Picture of the day
MACS 2129-1 Galactic Graveyard: “This chillingly haunted galaxy mysteriously stopped making stars only a few billion years after the Big Bang! It became a cosmic cemetery, illuminated by the red glow of decaying stars. Dare to enter, and you might encounter the frightening corpses of exoplanets or the final death throes of once-mighty stars.”
NASA Exoplanet Exploration Halloween poster 2020.
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Hubble Reveals Cosmic Mystery – This is an image from NASA’s Hubble Space Telescope of NGC 4449, one of the dwarf galaxies in the Galaxies Losing Oxygen via Winds (GLOW) study. Researchers found that dwarf galaxies can hold onto only a small fraction of the oxygen made by their stars.

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This is an image from NASA’s Hubble Space Telescope of NGC 4449, one of the dwarf galaxies in the Galaxies Losing Oxygen via Winds (GLOW) study. Researchers found that dwarf galaxies can hold onto only a small fraction of the oxygen made by their stars.

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Webb Captures Stellar Jets – NASA’s James Webb Space Telescope has revealed many protostars and stars within the glowing gases of NGC 7129. Hot, atomic hydrogen gas is shown here in the golden region, while cooler, molecular hydrogen gas, shocked by embedded protostars, is represented in red.

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NASA’s James Webb Space Telescope has revealed many protostars and stars within the glowing gases of NGC 7129. Hot, atomic hydrogen gas is shown here in the golden region, while cooler, molecular hydrogen gas, shocked by embedded protostars, is represented in red.

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Superbubble in the Large Magellanic Cloud – N44 is a complex nebula filled with glowing hydrogen gas, dark lanes of dust, massive stars, and many populations of stars of different ages. One of its most distinctive features, however, is the dark, starry gap called a “superbubble,” visible in this Hubble Space Telescope image in the upper central region.
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Superbubble in the Large Magellanic Cloud – N44 is a complex nebula filled with glowing hydrogen gas, dark lanes of dust, massive stars, and many populations of stars of different ages. One of its most distinctive features, however, is the dark, starry gap called a “superbubble,” visible in this Hubble Space Telescope image in the upper central region.

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N44 is a complex nebula filled with glowing hydrogen gas, dark lanes of dust, massive stars, and many populations of stars of different ages. One of its most distinctive features, however, is the dark, starry gap called a “superbubble,” visible in this Hubble Space Telescope image in the upper central region.

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Webb Opens Treasure Chest – This NASA/ESA/CSA James Webb Space Telescope Picture of the Month takes us to a fantastical realm within our home galaxy, where piercing starlight and billowing winds sculpt dust clouds into inventive shapes. This scene is from the Carina Nebula, which lies just 7500 light-years away in the constellation Carina (the Keel).

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This NASA/ESA/CSA James Webb Space Telescope Picture of the Month takes us to a fantastical realm within our home galaxy, where piercing starlight and billowing winds sculpt dust clouds into inventive shapes. This scene is from the Carina Nebula, which lies just 7500 light-years away in the constellation Carina (the Keel).

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NASA’s Chandra Finds Young Stars Dim Quickly – Scientists have found that young stellar cousins of our Sun are calming down and dimming more quickly in their X-ray output than previously thought, according to a study using NASA’s Chandra X-ray Observatory.
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NASA’s Chandra Finds Young Stars Dim Quickly – Scientists have found that young stellar cousins of our Sun are calming down and dimming more quickly in their X-ray output than previously thought, according to a study using NASA’s Chandra X-ray Observatory.

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Scientists have found that young stellar cousins of our Sun are calming down and dimming more quickly in their X-ray output than previously thought, according to a study using NASA’s Chandra X-ray Observatory.

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Goldstone’s DSS-15 Antenna and the Milky Way – Deep Space Station 15 (DSS-15), one of the 112-foot (34-meter) antennas at the Goldstone Deep Space Communications Complex near Barstow, California, looks skyward, with the stars of the Milky Way overhead, in September 2025.
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Goldstone’s DSS-15 Antenna and the Milky Way – Deep Space Station 15 (DSS-15), one of the 112-foot (34-meter) antennas at the Goldstone Deep Space Communications Complex near Barstow, California, looks skyward, with the stars of the Milky Way overhead, in September 2025.

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Deep Space Station 15 (DSS-15), one of the 112-foot (34-meter) antennas at the Goldstone Deep Space Communications Complex near Barstow, California, looks skyward, with the stars of the Milky Way overhead, in September 2025.

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Chandra, Webb Catch Twinkling Lights – This stellar landscape is reminiscent of a winter vista in a view from NASA’s James Webb Space Telescope (red, green, and blue). Chandra data (red, green and blue) punctuate the scene with bursts of colored lights representing high-energy activity from the active stars.
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Chandra, Webb Catch Twinkling Lights – This stellar landscape is reminiscent of a winter vista in a view from NASA’s James Webb Space Telescope (red, green, and blue). Chandra data (red, green and blue) punctuate the scene with bursts of colored lights representing high-energy activity from the active stars.

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This stellar landscape is reminiscent of a winter vista in a view from NASA’s James Webb Space Telescope (red, green, and blue). Chandra data (red, green and blue) punctuate the scene with bursts of colored lights representing high-energy activity from the active stars.

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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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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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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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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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Mapping Dark Matter – This image shows two massive galaxy clusters. The vast number of galaxies and foreground stars in the image were captured by NASA’s James Webb Space Telescope in near-infrared light. Glowing, hot X-rays captured by NASA’s Chandra X-ray Observatory appear in pink. The blue represents the dark matter, which was precisely mapped by researchers with Webb’s detailed imaging.
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Mapping Dark Matter – This image shows two massive galaxy clusters. The vast number of galaxies and foreground stars in the image were captured by NASA’s James Webb Space Telescope in near-infrared light. Glowing, hot X-rays captured by NASA’s Chandra X-ray Observatory appear in pink. The blue represents the dark matter, which was precisely mapped by researchers with Webb’s detailed imaging.

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This image shows two massive galaxy clusters. The vast number of galaxies and foreground stars in the image were captured by NASA’s James Webb Space Telescope in near-infrared light. Glowing, hot X-rays captured by NASA’s Chandra X-ray Observatory appear in pink. The blue represents the dark matter, which was precisely mapped by researchers with Webb’s detailed imaging.

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