NASA’s Astronomy Photo of the Day

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M83: The Southern Pinwheel

M83: The Southern Pinwheel

Beautiful and bright spiral galaxy M83 lies a some twelve million light-years away, near the southeastern tip of the very long constellation Hydra. Prominent spiral arms traced by dark dust…

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North Star: Polaris and Surrounding Dust

North Star: Polaris and Surrounding Dust

Why is Polaris called the North Star? First, Polaris is the nearest bright star toward the north spin axis of the Earth. Therefore, as the Earth turns, stars appear to…

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Comet ATLAS Before Sunrise

Comet ATLAS Before Sunrise

Comet ATLAS is really bright now, but also really close to the Sun. Outside the glow of the Sun, Comet C/2024 G3 (ATLAS) would be one of the more remarkable…

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Mimas: Small Moon with a Big Crater

Mimas: Small Moon with a Big Crater

Whatever hit Mimas nearly destroyed it. What remains is one of the largest impact craters on one of Saturn's smallest round moons. Analysis indicates that a slightly larger impact would…

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An Evening Sky Full of Planets

An Evening Sky Full of Planets

Only Mercury is missing from a Solar System parade of planets in this early evening skyscape. Rising nearly opposite the Sun, bright Mars is at the far left. The other…

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