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Astronomy Picture of the Day
Updated: 4 hours 36 min ago

Castle Eye View

Thu, 13/04/2017 - 13:00

The best known asterism in northern skies, The Big Dipper is The best known asterism in northern skies, The Big Dipper is


Dark Nebula LDN 1622 and Barnard's Loop

Wed, 12/04/2017 - 11:00

The silhouette of an intriguing The silhouette of an intriguing


Filaments of Active Galaxy NGC 1275

Tue, 11/04/2017 - 09:00

What keeps these filaments attached to this galaxy? What keeps these filaments attached to this galaxy?


Plane Contrail and Sun Halo

Mon, 10/04/2017 - 07:00

What's happened to the sky? What's happened to the sky?


Saturn in Infrared from Cassini

Sun, 09/04/2017 - 18:00

Many details of Saturn appear clearly in infrared light. Many details of Saturn appear clearly in infrared light.


NGC 602 and Beyond

Sat, 08/04/2017 - 16:00

Near the outskirts of the Near the outskirts of the


Split the Universe

Fri, 07/04/2017 - 14:00

Just now, before you hit the button, two future universes are possible. Just now, before you hit the button, two future universes are possible.


3D 67P

Thu, 06/04/2017 - 12:00

Get out your Get out your


Young Stars and Dusty Nebulae in Taurus

Wed, 05/04/2017 - 10:00

This complex of dusty nebulae lingers along the edge of This complex of dusty nebulae lingers along the edge of


Nebula with Laser Beams

Tue, 04/04/2017 - 08:00

Nebula with Laser Beams Nebula with Laser Beams


King of Wings Hoodoo under the Milky Way

Mon, 03/04/2017 - 06:00

This rock structure is not only surreal -- it's real. This rock structure is not only surreal -- it's real.


Black Hole Accreting with Jet

Sun, 02/04/2017 - 17:00

What happens when a black hole devours a star? What happens when a black hole devours a star?


Tardigrade in Moss

Sat, 01/04/2017 - 15:00

Is this an alien? Is this an alien?


Ganymede's Shadow

Fri, 31/03/2017 - 13:00

Approaching Approaching


The Comet, the Owl, and the Galaxy

Thu, 30/03/2017 - 11:00

The Comet, the Owl, and the Galaxy The Comet, the Owl, and the Galaxy


SH2-155: The Cave Nebula

Wed, 29/03/2017 - 09:00

 The Cave Nebula SH2-155: The Cave Nebula


Central Cygnus Skyscape

Tue, 28/03/2017 - 07:00

Central Cygnus Skyscape Central Cygnus Skyscape


Fast Stars and Rogue Planets in the Orion Nebula

Mon, 27/03/2017 - 18:00

Start with the constellation of Orion. Start with the constellation of Orion.


The Aurora Tree

Sun, 26/03/2017 - 16:00

Yes, but can your tree do this? Yes, but can your tree do this?


Equinox on a Spinning Earth

Sat, 25/03/2017 - 14:00

When does the line between day and night become vertical? When does the line between day and night become vertical?