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Astronomy Picture of the Day
Updated: 18 min 14 sec ago

NGC 3717: A Nearly Sideways Spiral Galaxy

13 hours 18 min ago

Some spiral galaxies are seen nearly sideways. Some spiral galaxies are seen nearly sideways.


Lunar Craters Langrenus and Petavius

13 hours 18 min ago

The history of the Moon is partly written in its craters. The history of the Moon is partly written in its craters.


A Mercury Transit Sequence

13 hours 18 min ago

Tomorrow -- Monday --   Tomorrow -- Monday --


Saturn the Giant

13 hours 18 min ago

On May 25, 1961 U.S. president On May 25, 1961 U.S. president


NGC 3572 and the Southern Tadpoles

13 hours 18 min ago

NGC 3572 and the Southern Tadpoles NGC 3572 and the Southern Tadpoles


Messier 45: The Daughters of Atlas and Pleione

13 hours 18 min ago

Hurtling through a Hurtling through a


Mercury in Silhouette

13 hours 18 min ago

Mercury in Silhouette Mercury in Silhouette


21st Century M101

Tue, 12/11/2019 - 07:00

21st Century M101 21st Century M101


Spiral Galaxies Spinning Super Fast

Mon, 11/11/2019 - 18:00

Why are these galaxies spinning so fast? Why are these galaxies spinning so fast?


Near the Center of the Lagoon Nebula

Sun, 10/11/2019 - 16:00

Stars are battling gas and dust in the Lagoon Nebula Stars are battling gas and dust in the Lagoon Nebula


Daphnis and the Rings of Saturn

Sat, 09/11/2019 - 14:00

What's happening to the rings of Saturn? What's happening to the rings of Saturn?


Inside the Flame Nebula

Fri, 08/11/2019 - 12:00

Inside the Flame Nebula Inside the Flame Nebula


The Day After Mars

Thu, 07/11/2019 - 10:00

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


The Ghostly Veil Nebula

Wed, 06/11/2019 - 08:00

The Ghostly Veil Nebula The Ghostly Veil Nebula


M42: Inside the Orion Nebula

Tue, 05/11/2019 - 06:00

 Inside the Orion Nebula M42: Inside the Orion Nebula


Curiosity Rover Finds a Clay Cache on Mars

Mon, 04/11/2019 - 17:00

Why is there clay on Mars? Why is there clay on Mars?


The Space Station Crosses a Spotless Sun

Sun, 03/11/2019 - 15:00

Typically, the International Space Station is visible only at night. Typically, the International Space Station is visible only at night.


Ghost Aurora over Canada

Sat, 02/11/2019 - 13:00

What does this aurora look like to you? What does this aurora look like to you?


Gravity s Grin

Fri, 01/11/2019 - 11:00

Gravity s Grin Gravity s Grin


The Ghosts of Cassiopeia

Thu, 31/10/2019 - 09:00

These bright rims and flowing shapes look ghostly on a cosmic scale. These bright rims and flowing shapes look ghostly on a cosmic scale.