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Astronomy Picture of the Day
Updated: 2 hours 49 min ago

Gravitational Anomalies of Mercury

Mon, 05/11/2015 - 06:42

What's that under the surface of Mercury? What's that under the surface of Mercury?


An Unexpected Aurora over Norway

Sun, 05/10/2015 - 03:42

Sometimes the sky lights up unexpectedly. Sometimes the sky lights up unexpectedly.


Moonrise Through Mauna Kea's Shadow

Sat, 05/09/2015 - 06:42

Moonrise Through Mauna Kea's Shadow   Moonrise Through Mauna Kea's Shadow


M51: The Whirlpool Galaxy

Fri, 05/08/2015 - 02:42

Follow the handle of Follow the handle of


MESSENGER's Last Day on Mercury

Thu, 05/07/2015 - 05:42

MESSENGER's Last Day on Mercury MESSENGER's Last Day on Mercury


Across the Sun

Wed, 05/06/2015 - 01:42

A long solar filament stretches across the relatively calm A long solar filament stretches across the relatively calm


Space Station over Lunar Terminator

Tue, 04/28/2015 - 06:42

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


Planetary Nebula Mz3: The Ant Nebula

Tue, 04/28/2015 - 06:42

Why isn't this ant a big sphere?  Why isn't this ant a big sphere?


Cluster and Starforming Region Westerlund 2

Tue, 04/28/2015 - 06:42

Located 20,000 light-years away in the constellation Carina, Located 20,000 light-years away in the constellation Carina,


Blue Tears and the Milky Way

Tue, 04/28/2015 - 06:42

Lapping at rocks Lapping at rocks


Meteor in the Milky Way

Tue, 04/28/2015 - 06:42

Meteor in the Milky Way Meteor in the Milky Way


Colorful Star Clouds in Cygnus

Tue, 04/28/2015 - 06:42

Stars can form in colorful surroundings. Stars can form in colorful surroundings.


Vesta Trek: A Digital Model of Asteroid Vesta

Mon, 04/27/2015 - 02:42

You can explore asteroid Vesta. You can explore asteroid Vesta.


Total Solar Eclipse over Svalbard

Sun, 04/26/2015 - 06:42

Going, going, gone. Going, going, gone.


Ring Galaxy AM 0644 741 from Hubble

Sat, 04/25/2015 - 02:42

How could a galaxy become shaped like a ring?  The rim of the blue galaxy How could a galaxy become shaped like a ring? The rim of the blue galaxy


The Great Crater Hokusai

Fri, 04/24/2015 - 05:42

One of the largest young craters on Mercury, One of the largest young craters on Mercury,


M46 Plus Two

Thu, 04/23/2015 - 03:42

Galactic or Galactic or


One-Armed Spiral Galaxy NGC 4725

Wed, 04/22/2015 - 00:42

While most spiral galaxies, including our While most spiral galaxies, including our


Mystic Mountain Dust Pillars

Tue, 04/21/2015 - 04:42

It's stars versus dust in the Carina Nebula and the stars are winning. It's stars versus dust in the Carina Nebula and the stars are winning.


Through the Shadow of the Moon

Mon, 04/20/2015 - 00:42

What would it look like to fly through a total eclipse of the Sun? What would it look like to fly through a total eclipse of the Sun?