NASA’s Astronomy Photo of the Day

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M41: The Little Beehive Star Cluster

M41: The Little Beehive Star Cluster

Why are there so many bright blue stars? Stars are usually born in clusters, and the brightest and most massive of these stars typically glow blue. Less-bright, non-blue stars like…

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Light Pillar over Erupting Etna

Light Pillar over Erupting Etna

Can a lava flow extend into the sky? No, but light from the lava flow can. One effect is something quite unusual -- a volcanic light pillar. More typically, light…

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Saturn in Infrared from Cassini

Saturn in Infrared from Cassini

Saturn looks slightly different in infrared light. Bands of clouds show great structure, including long stretching storms. Also quite striking in infrared is the unusual hexagonal cloud pattern surrounding Saturn's…

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Rima Hyginus

Rima Hyginus

Rima Hyginus is a spectacular fissure, some 220 kilometers long, found near the center of the lunar near side. Easy to spot in telescopic views of the Moon, it stretches…

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Hubble's Andromeda Galaxy Mosaic

Hubble's Andromeda Galaxy Mosaic

The largest photomosaic ever assembled from Hubble Space Telescope image data is a panoramic view of our neighboring spiral Andromeda Galaxy. With 600 overlapping frames assembled from observations made from…

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