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Mercury and the Quiet Sun

Astronomy Picture of the Day - 2 hours 29 min ago

Mercury and the Quiet Sun


Mercury in Silhouette

Astronomy Picture of the Day - Thu, 11/14/2019 - 00:52

Mercury in Silhouette


NGC 3717: A Nearly Sideways Spiral Galaxy

Astronomy Picture of the Day - Wed, 11/13/2019 - 00:52

Some spiral galaxies are seen nearly sideways.


Lunar Craters Langrenus and Petavius

Astronomy Picture of the Day - Tue, 11/12/2019 - 00:52

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


A Mercury Transit Sequence

Astronomy Picture of the Day - Mon, 11/11/2019 - 00:51

Tomorrow -- Monday --


Saturn the Giant

Astronomy Picture of the Day - Sun, 11/10/2019 - 00:51

On May 25, 1961 U.S. president


NGC 3572 and the Southern Tadpoles

Astronomy Picture of the Day - Sat, 11/09/2019 - 00:50

NGC 3572 and the Southern Tadpoles


21st Century M101

Astronomy Picture of the Day - Thu, 11/07/2019 - 00:48

21st Century M101


Spiral Galaxies Spinning Super Fast

Astronomy Picture of the Day - Wed, 11/06/2019 - 00:47

Why are these galaxies spinning so fast?


Near the Center of the Lagoon Nebula

Astronomy Picture of the Day - Tue, 11/05/2019 - 00:46

Stars are battling gas and dust in the Lagoon Nebula


Daphnis and the Rings of Saturn

Astronomy Picture of the Day - Mon, 11/04/2019 - 00:46

What's happening to the rings of Saturn?


Inside the Flame Nebula

Astronomy Picture of the Day - Sun, 11/03/2019 - 01:45

Inside the Flame Nebula


The Day After Mars

Astronomy Picture of the Day - Sat, 11/02/2019 - 01:44

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


The Ghostly Veil Nebula

Astronomy Picture of the Day - Fri, 11/01/2019 - 01:43

The Ghostly Veil Nebula


M42: Inside the Orion Nebula

Astronomy Picture of the Day - Thu, 10/31/2019 - 01:43

M42: Inside the Orion Nebula


Curiosity Rover Finds a Clay Cache on Mars

Astronomy Picture of the Day - Wed, 10/30/2019 - 01:42

Why is there clay on Mars?


The Space Station Crosses a Spotless Sun

Astronomy Picture of the Day - Tue, 10/29/2019 - 01:42

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


Ghost Aurora over Canada

Astronomy Picture of the Day - Mon, 10/28/2019 - 01:37

What does this aurora look like to you?


Gravity s Grin

Astronomy Picture of the Day - Sun, 10/27/2019 - 01:37

Gravity s Grin


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