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Clouds

 

Astronomy Picture of the Day: Northern Lights and Noctilucent Clouds

Skies after the near-solstice sunset on June 17 are reflected in this calm lake.

Astronomy Picture of the Day: Ancients of Sea and Sky

They may look like round rocks, but they're alive.

Astronomy Picture of the Day: Red Cloudbow over Delaware

What kind of rainbow is this? In this case, no rain was involved -- what is pictured is actually a red cloudbow.

Astronomy Picture of the Day: Countryside Mars and Milky Way

Mars shines brightly now in planet Earth's sky.

Astronomy Picture of the Day: The Clash of NGC 3256

Marked by an unusually bright central region, swirling dust lanes, and far flung tidal tails, peculiar NGC 3256 is the aftermath of a truly cosmic collision.

Astronomy Picture of the Day: A Sun Pillar over Norway

Have you ever seen a sun pillar? When the air is cold and the Sun is rising or setting, falling ice crystals can reflect sunlight and create an unusual column of light.

Astronomy Picture of the Day: Complex Jupiter

How complex is Jupiter? NASA's Juno mission to Jupiter is finding the Jovian giant to be more complicated than expected.

Astronomy Picture of the Day: Jupiter Season, Hawaiian Sky

Volcanic activity on the Big Island of Hawaii has increased since this Hawaiian night skyscape was recorded earlier this year.

Astronomy Picture of the Day: Spiral Galaxy NGC 4038 in Collision

This galaxy is having a bad millennium. In fact, the past 100 million years haven't been so good, and probably the next billion or so will be quite tumultuous.

Astronomy Picture of the Day: Jupiter Cloud Animation from Juno

How do Jupiter's clouds move? To help find out, images taken with NASA's Juno spacecraft during its last pass near Jupiter have been analyzed and digitally extrapolated into a time-lapse video.

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