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Icy Travelers
Comets are cosmic snowballs of frozen gases, rock and dust roughly the size of a small town. When a comet's orbit brings it close to the sun, it heats up and spews dust and gases into a giant glowing head larger than most planets. The dust and gases form a tail that stretches away from the sun for millions of kilometers.

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Comet ISON (Damian Peach)
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Hartley 2 in 3-D
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Multifaceted Observations of Comet ISON Covering the Electromagnetic Spectrum
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NEOWISE -- Back to Hunt More Asteroids
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Sundiving Comet and CME
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Spitzer Eyes Comet ISON
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Eyes on Comet ISON
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ISON, Stars and Galaxies
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A Timeline Of Comet ISON's Dangerous Journey
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Earth's Neighborhood
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Compass and Scale Image for Comet ISON
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Hubble's View of Comet ISON
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Night-Shining Clouds
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Comet Halley
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Comet Machholz
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Infographic: What's That Space Rock?
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Previous
    1     2     3     4     5     6     7    
Next
Previous
    1     2     3     4     5     6     7    
Next
Comet ISON (Damian Peach)
   Browse       View Full Size   
Hartley 2 in 3-D
   Browse       View Full Size   
Multifaceted Observations of Comet ISON Covering the Electromagnetic Spectrum
   Browse       View Full Size   
NEOWISE -- Back to Hunt More Asteroids
   Browse       View Full Size   
Sundiving Comet and CME
   Browse       View Full Size   
Spitzer Eyes Comet ISON
   Browse       View Full Size   
Eyes on Comet ISON
   Browse       View Full Size   
ISON, Stars and Galaxies
   Browse       View Full Size   
A Timeline Of Comet ISON's Dangerous Journey
   Browse       View Full Size   
Earth's Neighborhood
   Browse       View Full Size   
Compass and Scale Image for Comet ISON
   Browse       View Full Size   
Hubble's View of Comet ISON
   Browse       View Full Size   
Night-Shining Clouds
   Browse       View Full Size   
Comet Halley
   Browse       View Full Size   
Comet Machholz
   Browse       View Full Size   
Infographic: What's That Space Rock?
   Browse       View Full Size   
Previous
    1     2     3     4     5     6     7    
Next