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Equinox: Analemma over the Callanish Stones

Astronomy Picture of the Day - Mon, 09/24/2018 - 10:25

Does the Sun return to the same spot on the sky every day at the same time?


Window Seat over Hudson Bay

Astronomy Picture of the Day - Sun, 09/23/2018 - 10:23

On the August 18 night flight from San Francisco to Zurich,


Irregular Galaxy NGC 55

Astronomy Picture of the Day - Sat, 09/22/2018 - 10:23

Irregular galaxy NGC 55 is thought to be similar to the Large Magellanic


Stars and Dust in Corona Australis

Astronomy Picture of the Day - Fri, 09/21/2018 - 10:22

Cosmic dust clouds and young, energetic stars


Cocoon Nebula Deep Field

Astronomy Picture of the Day - Thu, 09/20/2018 - 10:21

Inside the Cocoon Nebula is a newly developing cluster of stars.


Salt Pepper and Ice

Astronomy Picture of the Day - Wed, 09/19/2018 - 10:20

There's a "camera" comet now moving across the sky.


Cosmic Collision Forges Galactic Ring

Astronomy Picture of the Day - Tue, 09/18/2018 - 10:18

How could a galaxy become shaped like a ring?


A Solar Filament Erupts

Astronomy Picture of the Day - Mon, 09/17/2018 - 10:11

What's happened to our Sun?


Mont Blanc, Meteor, and Milky Way

Astronomy Picture of the Day - Sun, 09/16/2018 - 10:09

Mont Blanc, Meteor, and Milky Way


Ice Halos at Yellowknife

Astronomy Picture of the Day - Sat, 09/15/2018 - 09:57

Ice Halos at Yellowknife


Comet, Clusters, and Nebulae

Astronomy Picture of the Day - Fri, 09/14/2018 - 09:54

Bright enough for binocular viewing


Lunations

Astronomy Picture of the Day - Thu, 09/13/2018 - 09:49

Our Moon's appearance changes nightly.


Milky Way over Trolls Tongue

Astronomy Picture of the Day - Wed, 09/12/2018 - 09:44

You have to take a


Curiosity Vista from Vera Rubin Ridge

Astronomy Picture of the Day - Tue, 09/11/2018 - 09:43

If you could stand on Mars -- what might you see?


M1: The Crab Nebula from Hubble

Astronomy Picture of the Day - Mon, 09/10/2018 - 09:35

This is the mess that is left when a star explodes.


Real Time Perseid

Astronomy Picture of the Day - Sun, 09/09/2018 - 09:32

Real Time Perseid


Saturn's North Polar Hexagon

Astronomy Picture of the Day - Sat, 09/08/2018 - 09:30

Saturn's North Polar Hexagon


Along the Western Veil

Astronomy Picture of the Day - Fri, 09/07/2018 - 09:30

Delicate in appearance, these filaments of shocked, glowing gas,


NGC 3628: Sideways Spiral Galaxy

Astronomy Picture of the Day - Thu, 09/06/2018 - 09:24

What do spiral galaxies look like sideways?


Moon behind Lava Fountain

Astronomy Picture of the Day - Wed, 09/05/2018 - 09:15

What's happened to the Moon?


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