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Astronomy Picture of the Day
Updated: 28 min 2 sec ago

Mercury and the Quiet Sun

28 min 2 sec ago

Mercury and the Quiet Sun Mercury and the Quiet Sun


Mercury in Silhouette

28 min 2 sec ago

Mercury in Silhouette Mercury in Silhouette


NGC 3717: A Nearly Sideways Spiral Galaxy

28 min 2 sec ago

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


Lunar Craters Langrenus and Petavius

28 min 2 sec 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

28 min 2 sec ago

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


Saturn the Giant

28 min 2 sec ago

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


M16 and the Eagle Nebula

28 min 2 sec ago

A star cluster around 2 million years young surrounded by A star cluster around 2 million years young surrounded by


NGC 3572 and the Southern Tadpoles

Thu, 14/11/2019 - 11:00

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


Messier 45: The Daughters of Atlas and Pleione

Wed, 13/11/2019 - 09:00

Hurtling through a Hurtling through a


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?