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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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Bright Comet ISON
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Comet ISON Enhanced
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Comet ISON Streaks Toward the Sun
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Stacked Color Composite -- Comet ISON
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ISON in November by Hubble
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Morning Lovejoy
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Comet ISON Nearing Perihelion
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Comet ISON -- Two Tails
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Comet ISON Passes Through Virgo
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A Big Year for Small Bodies: Comet ISON (Technical Poster)
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Comet Ison Roars Through Leo
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Halley's Comet
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Comet Crisis
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ISON's Nucleus
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NASA's Hubble Sees Comet ISON Intact
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First Image of Comet ISON from Mars
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Previous
    1     2     3     4     5     6     7    
Next
Bright Comet ISON
   Browse       View Full Size   
Comet ISON Enhanced
   Browse       View Full Size   
Comet ISON Streaks Toward the Sun
   Browse       View Full Size   
Stacked Color Composite -- Comet ISON
   Browse       View Full Size   
ISON in November by Hubble
   Browse       View Full Size   
Morning Lovejoy
   Browse       View Full Size   
Comet ISON Nearing Perihelion
   Browse       View Full Size   
Comet ISON -- Two Tails
   Browse       View Full Size   
Comet ISON Passes Through Virgo
   Browse       View Full Size   
A Big Year for Small Bodies: Comet ISON (Technical Poster)
   Browse       View Full Size   
Comet Ison Roars Through Leo
   Browse       View Full Size   
Halley's Comet
   Browse       View Full Size   
Comet Crisis
   Browse       View Full Size   
ISON's Nucleus
   Browse       View Full Size   
NASA's Hubble Sees Comet ISON Intact
   Browse       View Full Size   
First Image of Comet ISON from Mars
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