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Astronomy Picture of the Day
Updated: 5 hours 44 min ago

Polar Ring Galaxy NGC 660

Fri, 11/14/2014 - 02:42

NGC 660 is featured in NGC 660 is featured in


The Map of Dione

Thu, 11/13/2014 - 05:42

This cylindrical projection global map is This cylindrical projection global map is


SH2-155: The Cave Nebula

Wed, 11/12/2014 - 02:42

 The Cave Nebula SH2-155: The Cave Nebula


NGC 4762: A Galaxy on the Edge

Tue, 11/11/2014 - 06:42

Why is there a bright line on the sky? Why is there a bright line on the sky?


Moon and Earth from Chang e 5 T1

Mon, 11/10/2014 - 02:42

Described at times as a big Described at times as a big


In Green Company: Aurora over Norway

Sun, 11/09/2014 - 05:42

Raise your arms if you see an aurora. Raise your arms if you see an aurora.


Titan Beyond the Rings

Sat, 11/08/2014 - 02:42

When orbiting Saturn, be sure to watch for breathtaking superpositions of moons and rings.  When orbiting Saturn, be sure to watch for breathtaking superpositions of moons and rings.


The Day After Mars

Fri, 11/07/2014 - 05:42

October 31, 1938 was the day after Martians encountered planet Earth, October 31, 1938 was the day after Martians encountered planet Earth,


Milky Way over Devils Tower

Thu, 11/06/2014 - 01:42

A mysterious formation known as A mysterious formation known as


A Spectre in the Eastern Veil

Wed, 11/05/2014 - 04:42

A Spectre in the Eastern Veil A Spectre in the Eastern Veil


Iridescent Cloud Edge Over Colorado

Tue, 11/04/2014 - 07:42

Sometimes your eclipse viewing goes bad in an interesting way. Sometimes your eclipse viewing goes bad in an interesting way.


Retrograde Mars

Mon, 11/03/2014 - 03:42

Why would Mars appear to move backwards?  Why would Mars appear to move backwards?


Plane, Clouds, Moon, Spots, Sun

Sat, 11/01/2014 - 23:42

What's that in front of the Sun? What's that in front of the Sun?


Too Close to a Black Hole

Sat, 11/01/2014 - 02:42

What would you see if you went right up to a black hole? What would you see if you went right up to a black hole?


Sunspots and Solar Eclipse

Thu, 10/30/2014 - 23:42

Sunspots and Solar Eclipse Sunspots and Solar Eclipse


AR 2192: Giant on the Sun

Thu, 10/30/2014 - 03:42

As you (safely!) watched the progress of yesterday's partial solar As you (safely!) watched the progress of yesterday's partial solar


Galaxies in Pegasus

Tue, 10/28/2014 - 23:42

Galaxies in Pegasus Galaxies in Pegasus


Sunspot Group AR 2192 Crackles

Tue, 10/28/2014 - 02:42

One of the largest sunspot groups in recent years is now crossing the Sun. One of the largest sunspot groups in recent years is now crossing the Sun.


Mimas: Small Moon with a Big Crater

Mon, 10/27/2014 - 05:42

Whatever hit Mimas nearly destroyed it.  Whatever hit Mimas nearly destroyed it.


Comet Siding Spring Passes Mars

Sun, 10/26/2014 - 01:42

Yesterday, a comet passed very close to Mars. Yesterday, a comet passed very close to Mars.