Clusters of galaxies do not appear in an instant. Instead they gradually form through the accumulation of many galaxies. But when galaxies fall in they don't just stop moving. Instead, they keep moving around. These are called ...
Astronomy
Jan 13, 2023
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53
In the eROSITA all-sky survey, scientists at the Max Planck Institute for Extraterrestrial Physics (MPE) have found an interesting repeating event. In an otherwise quiescent galaxy, an X-ray flare repeats every 220 days, ...
Astronomy
Jan 13, 2023
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197
Hundreds of black holes previously hidden, or buried, have been found using NASA's Chandra X-ray Observatory. This result helps give astronomers a more accurate census of black holes in the universe.
Astronomy
Jan 12, 2023
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123
The Exoplanet Watch project invites you to use your smartphone or personal telescope to help track worlds outside our solar system.
Astronomy
Jan 10, 2023
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28
Omnipresent fireworks displays won't be the only lights in the sky over the next few nights: There will be natural spectacles, too.
Astronomy
Jan 3, 2023
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31
Look up on a clear sunny day and you will see a blue sky. But is this the true color of the sky? Or is it the only color of the sky?
Astronomy
Dec 30, 2022
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85
Studying the large-scale structure of our galaxy isn't easy. We don't have a clear view of the Milky Way's shape and features like we do of other galaxies, largely because we live within it. But we do have some advantages. ...
Astronomy
Dec 27, 2022
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133
Researchers from Italy, Chile and Galicia have studied and compared the light pollution levels at major astronomical observatories across the world. The study shows that light is polluting the sky above most observatories ...
Astronomy
Dec 20, 2022
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158
The night sky is a shared wilderness. On a dark night, away from the city lights, you can see the stars in the same way as your ancestors did centuries ago. You can see the Milky Way and the constellations associated with ...
Astronomy
Dec 1, 2022
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21
Earlier this year, astronomers were keeping tabs on data from the Zwicky Transient Facility, an all-sky survey based at the Palomar Observatory in California, when they detected an extraordinary flash in a part of the sky ...
Astronomy
Nov 30, 2022
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