Astronomy Picture of the Day

zdjęcie Stars and Dust in Corona Australis

Stars and Dust in Corona Australis

Cosmic dust clouds and young, energetic stars inhabit this telescopic vista, less than 500 light-years away toward the northern boundary of Corona Australis, the Southern Crown. The dust clouds effectively block light from more distant background ...

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zdjęcie Cocoon Nebula Deep Field

Cocoon Nebula Deep Field

Inside the Cocoon Nebula is a newly developing cluster of stars. The cosmic Cocoon on the upper right also punctuates a long trail of obscuring interstellar dust clouds to its left. Cataloged as IC 5146, the beautiful nebula is nearly 15 ...

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zdjęcie Salt, Pepper, and Ice

Salt, Pepper, and Ice

There's a "camera" comet now moving across the sky. Just a bit too dim to see with the unaided eye, Comet 21P / Giacobini-Zinner has developed a long tail that makes it a good sight for binoculars and sensitive cameras. The movement of the Comet ...

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zdjęcie Cosmic Collision Forges Galactic Ring

Cosmic Collision Forges Galactic Ring

How could a galaxy become shaped like a ring? The rim of the blue galaxy pictured on the right is an immense ring-like structure 150,000 light years in diameter composed of newly formed, extremely bright, massive stars. That galaxy, AM ...

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zdjęcie A Solar Filament Erupts

A Solar Filament Erupts

What's happened to our Sun? Nothing very unusual -- it just threw a filament. Toward the middle of 2012, a long standing solar filament suddenly erupted into space producing an energetic Coronal Mass Ejection (CME). The filament had been held ...

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zdjęcie Mont Blanc, Meteor, and Milky Way

Mont Blanc, Meteor, and Milky Way

Snowy Mont Blanc is near the center of this atmospheric night skyscape. But high, thin clouds fogged the skies at the photographer's location, looking south toward Europe's highest peak from the southern Swiss Alps. Still, the 13 second exposure ...

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zdjęcie Ice Halos at Yellowknife

Ice Halos at Yellowknife

You've probably seen a circle around the Sun before. More common than rainbows, ice halos, like a 22 degree circular halo for example, can be easy to spot, especially if you can shade your eyes from direct sunlight. Still it's rare to see such a ...

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zdjęcie Comet, Clusters and Nebulae

Comet, Clusters and Nebulae

Bright enough for binocular viewing Comet 21P / Giacobini-Zinner stands out, even in this deep telephoto mosaic of the star cluster and nebula rich constellation Auriga the Charioteer. On the night of September 9 its greenish coma and diffuse ...

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zdjęcie Lunations

Lunations

Our Moon's appearance changes nightly. As the Moon orbits the Earth, the half illuminated by the Sun first becomes increasingly visible, then decreasingly visible. The featured video animates images taken by NASA's Moon-orbiting Lunar ...

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zdjęcie Milky Way over Troll's Tongue

Milky Way over Troll's Tongue

You have to take a long hike to see the Troll's Tongue -- ten hours over rocky terrain. And in this case, it took three trips to capture the landform below a clear night sky. Trolltunga itself is a picturesque rock protrusion extending about 700 ...

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