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Water Vapor Discovered on Distant Exoplanet
Where else might life exist?
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The Orion You Can Almost See
Do you recognize this constellation?
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Supernova Cannon Expels Pulsar J0002
What could shoot out a neutron star like a cannon ball?
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4000 Exoplanets
Over 4000 planets are now known to exist outside our Solar System.
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Noctilucent Clouds, Reflections, and Silhouettes
Sometimes it's night on the ground but day in the air. As the Earth rotates to eclipse the Sun, sunset rises up from the ground.
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Stephan's Quintet from Hubble
When did these big galaxies first begin to dance?
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The Conjunction of the 46p/wirtanen comet, the hyades cluster and the Pleiades cluster
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Astronomy Picture of the Day: Cetus Galaxies and Supernova
Large spiral galaxy NGC 1055 at top left joins spiral Messier 77 (bottom right) in this cosmic view toward the aquatic constellation Cetus.
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Astronomy Picture of the Day: Hyperion: Largest Known Galaxy Proto-Supercluster
How did galaxies form in the early universe?
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Astronomy Picture of the Day: The Sun's Spectrum with its Missing Colors
It is still not known why the Sun's light is missing some colors.
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