NASA’s Astronomy Photo of the Day

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Hydrogen Clouds of M33

Hydrogen Clouds of M33

Gorgeous spiral galaxy Messier 33 seems to have more than its fair share of glowing hydrogen gas. A prominent member of the local group of galaxies, M33 is also known…

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Dust Shells around WR 140 from Webb

Dust Shells around WR 140 from Webb

What are those strange rings? Rich in dust, the rings are likely 3D shells -- but how they were created remains a topic of research. Where they were created is…

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Comet G3 ATLAS over Uruguay

Comet G3 ATLAS over Uruguay

Comets can be huge. When far from the Sun, a comet's size usually refers to its hard nucleus of ice and rock, which typically spans a few kilometers -- smaller…

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Pleiades over Half Dome

Pleiades over Half Dome

Stars come in bunches. The most famous bunch of stars on the sky is the Pleiades, a bright cluster that can be easily seen with the unaided eye. The Pleiades…

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The Many Tails of Comet G3 ATLAS

The Many Tails of Comet G3 ATLAS

Why does this comet have so many tails? C/2024 G3 (ATLAS) has developed several long and intricate tails visible from Earth's southern hemisphere over the past two weeks. Many observers…

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