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Comet ISON

Skywatchers excited as Comet ISON approaches its big day in the sun

Perseid Meteor shower at Chapel of Garioch, near Aberdeen, Scotland, on Aug. 12, 2013.

Star Wars: Images of the Perseid Meteor Shower

The annual Perseid meteor shower at Chapel of Garioch, near Aberdeen, Scotland, on Aug.

Perseid Meteor Shower 2017: When, Where & How to See It

The Perseid meteor shower will burst into light this August as Earth passes through the long trail left by Comet Swift-Tuttle. Here's how and when to see the Perseids.

Auroras, Taken by Harald Albrigtsen on January 11, 2014 @ Kvaløya, Tromsø

Auroras, Taken by Harald Albrigtsen on January 2014 @ Kvaløya, Tromsø

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Ben Coffman Photography (EarthSky) Milky Way over Cannon Beach, Oregon

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New NASA images show the surface of Saturn’s moon Dione

NASA has released stunning new images of Saturn’s moon Dione. The images of the icy moon were taken during a June 16 flyby which took NASA’s Cassini spacecraft to within 321 miles of the moon’s surface.

Astronomers have found a new moon orbiting the solar system's outermost planet, Neptune. The tiny moon, just 12 miles across, was discovered in more than 150 pictures of Neptune taken by the Hubble Space Telescope between 2004 and 2009. The moon was barely visible in any one photo, but by combining multiple images, astronomer Mark Showalter of the SETI Institute in Mountain View, Calif., was able to catch it as it flitted around the giant planet once every 23 hours.

New Moon Found Orbiting Neptune, But What To Call It?

Even the Voyager 2 spacecraft missed the new moon when it flew past Neptune in

High Moon Over the Ruth Ampitheatre on Ruth Glacier, Denali National Park & Preserve, Alaska, USA Photographic Print by Mark Newman at Art.com

High Moon Over the Ruth Ampitheatre on Ruth Glacier, Denali National Park & Preserve, Alaska, USA

High Moon Over the Ruth Ampitheatre on Ruth Glacier, Denali National Park & Preserve, Alaska, USA Photographic Print by Mark Newman

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