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Astronomy Picture of the Day
Updated: 4 hours 27 min ago

Shoreline of the Universe

Sun, 09/21/2014 - 07:42

Shoreline of the Universe Shoreline of the Universe


Potentially Habitable Moons

Sun, 09/21/2014 - 07:42

Potentially Habitable Moons Potentially Habitable Moons


Cocoon Nebula Wide Field

Sun, 09/21/2014 - 07:42

Cocoon Nebula Wide Field Cocoon Nebula Wide Field


Aurora over Maine

Sun, 09/21/2014 - 07:42

It has been a good week for auroras. It has been a good week for auroras.


Milky Way above Atacama Salt Lagoon

Sun, 09/21/2014 - 07:42

Galaxies, stars, and a serene reflecting pool combine to create this memorable land and skyscape. Galaxies, stars, and a serene reflecting pool combine to create this memorable land and skyscape.


62 Kilometers above Comet Churyumov Gerasimenko

Sun, 09/21/2014 - 07:42

Spacecraft Rosetta continues to approach, circle, and map Comet Churyumov-Gerasimenko. Spacecraft Rosetta continues to approach, circle, and map Comet Churyumov-Gerasimenko.


Saturn at Equinox

Sun, 09/21/2014 - 07:42

How would Saturn look if its ring plane pointed right at the Sun? How would Saturn look if its ring plane pointed right at the Sun?


M27: The Dumbbell Nebula

Sat, 09/20/2014 - 04:42

The first hint of what will become of our The first hint of what will become of our


Median Mashup: Hubble's Top 100

Fri, 09/19/2014 - 07:42

Now, as you sip your Now, as you sip your


Supernova Remnant Puppis A

Thu, 09/18/2014 - 03:42

Supernova Remnant Puppis A Supernova Remnant Puppis A


Zodiacal Light before Dawn

Wed, 09/17/2014 - 06:42

You might not guess it, but sunrise was still hours away when You might not guess it, but sunrise was still hours away when


Laniakea: Our Home Supercluster of Galaxies

Tue, 09/16/2014 - 02:42

It is not only one of the largest structures known -- it is our home. It is not only one of the largest structures known -- it is our home.


An Aurora Cupcake with a Milky Way Topping

Mon, 09/15/2014 - 05:42

This sky looked delicious. This sky looked delicious.


Super Moon vs Micro Moon

Sun, 09/14/2014 - 01:42

What is so super about tomorrow's supermoon? What is so super about tomorrow's supermoon?


Full Moon Silhouettes

Sat, 09/13/2014 - 04:42

Have you ever watched the Moon rise? Have you ever watched the Moon rise?


Moonbow Beach

Fri, 09/12/2014 - 00:42

Moonbow Beach Moonbow Beach


A Sagittarius Starscape

Thu, 09/11/2014 - 04:42

This rich starscape spans nearly 7 degrees on the sky, toward the This rich starscape spans nearly 7 degrees on the sky, toward the


Cloud, Clusters and Comet Siding Spring

Wed, 09/10/2014 - 00:42

On October 19th, a good place to watch On October 19th, a good place to watch


M6: The Butterfly Cluster

Tue, 09/09/2014 - 03:42

 The Butterfly Cluster    M6: The Butterfly Cluster


Holometer: A Microscope into Space and Time

Mon, 09/08/2014 - 06:42

How different are space and time at very small scales? How different are space and time at very small scales?