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The Red Planet
Mars is a cold desert world. It is half the diameter of Earth and has the same amount of dry land. Like Earth, Mars has seasons, polar ice caps, volcanoes, canyons and weather, but its atmosphere is too thin for liquid water to exist for long on the surface. There are signs of ancient floods on Mars, but evidence for water now exists mainly in icy soil and thin clouds.

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Martian Morning Clouds Seen by Viking Orbiter 1 in 1976
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A Spectacular New Martian Impact Crater
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Martian Rock 'Harrison' in Color, Showing Crystals
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Curiosity Mars Rover Approaches 'Dingo Gap,' Mastcam View
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Crystal-Laden Martian Rock Examined by Curiosity's Laser Instrument
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Self-Portrait by Opportunity Mars Rover in January 2014
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Mineral Detected from Orbit Found in Dark Veneers
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NASA's Mars Rover Spirit's View Southward from Husband Hill
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Rock That Appeared in Front of Opportunity on
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Outcrop on 'Murray Ridge' Section of Martian Crater Rim
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Mars Atmosphere
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Mars Hill-Climbing Opportunity at 'Solander Point,' in Stereo
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Mars Hill-Climbing Opportunity at 'Solander Point'
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Pebbly Sandstone Conglomerate Rock at Curiosity's Waypoint 1
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Close-up of Ridge in Rock Outcrop at Curiosity's Waypoint 1
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Evolving Excitement Over 'Darwin' Rock Outcrop at 'Waypoint 1'
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Next
Previous
    1     2     3     4     5     6     7     8     9     10    
Next
Martian Morning Clouds Seen by Viking Orbiter 1 in 1976
   Browse       View Full Size   
A Spectacular New Martian Impact Crater
   Browse       View Full Size   
Martian Rock 'Harrison' in Color, Showing Crystals
   Browse       View Full Size   
Curiosity Mars Rover Approaches 'Dingo Gap,' Mastcam View
   Browse       View Full Size   
Crystal-Laden Martian Rock Examined by Curiosity's Laser Instrument
   Browse       View Full Size   
Self-Portrait by Opportunity Mars Rover in January 2014
   Browse       View Full Size   
Mineral Detected from Orbit Found in Dark Veneers
   Browse       View Full Size   
NASA's Mars Rover Spirit's View Southward from Husband Hill
   Browse       View Full Size   
Rock That Appeared in Front of Opportunity on
   Browse       View Full Size   
Outcrop on 'Murray Ridge' Section of Martian Crater Rim
   Browse       View Full Size   
Mars Atmosphere
   Browse       View Full Size   
Mars Hill-Climbing Opportunity at 'Solander Point,' in Stereo
   Browse       View Full Size   
Mars Hill-Climbing Opportunity at 'Solander Point'
   Browse       View Full Size   
Pebbly Sandstone Conglomerate Rock at Curiosity's Waypoint 1
   Browse       View Full Size   
Close-up of Ridge in Rock Outcrop at Curiosity's Waypoint 1
   Browse       View Full Size   
Evolving Excitement Over 'Darwin' Rock Outcrop at 'Waypoint 1'
   Browse       View Full Size   
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