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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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Just the Facts
Just the Facts
Dig Deeper
Dig Deeper
Create Your Report
Create Your Report
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Even More Stuff...
Even More Stuff...
  Explore Mars in 3D Videos Activities

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Curiosity Rover: One Year on Mars
Curiosity Rover: One Year on Mars
Twelve Months in Two Minutes; Curiosity's First Year on Mars
Twelve Months in Two Minutes; Curiosity's First...
Trek to Mount Sharp Begins
Trek to Mount Sharp Begins
Proposed 2020 Mars Rover Science Goals
Proposed 2020 Mars Rover Science Goals
Phobos Passing Overhead
Phobos Passing Overhead
ScienceCasts: Opportunity's Improbable Anniversary
ScienceCasts: Opportunity's Improbable...
Curiosity's Cameras
Curiosity's Cameras
Dry Ice Moves on Mars
Dry Ice Moves on Mars
Rover Ready to Switch Gears
Rover Ready to Switch Gears
Rover Readies for Second Drilling
Rover Readies for Second Drilling
'Spring Break' Over; Commanding Resumes
'Spring Break' Over; Commanding Resumes
Mars' Bygone Atmosphere
Mars' Bygone Atmosphere
Viking, Mars Trailblazer
Viking, Mars Trailblazer
In Memoriam: Ray Bradbury 1920-2012
In Memoriam: Ray Bradbury 1920-2012
MAVEN Magnetometer
MAVEN Magnetometer
Mars in a Minute: What Happens When the Sun Blocks our Signal?
Mars in a Minute: What Happens When the Sun...
Previous
    1     2     3     4     5     6     7    
Next
Previous
    1     2     3     4     5     6     7    
Next
Curiosity Rover: One Year on Mars
Curiosity Rover: One Year on Mars
Twelve Months in Two Minutes; Curiosity's First Year on Mars
Twelve Months in Two Minutes; Curiosity's First...
Trek to Mount Sharp Begins
Trek to Mount Sharp Begins
Proposed 2020 Mars Rover Science Goals
Proposed 2020 Mars Rover Science Goals
Phobos Passing Overhead
Phobos Passing Overhead
ScienceCasts: Opportunity's Improbable Anniversary
ScienceCasts: Opportunity's Improbable...
Curiosity's Cameras
Curiosity's Cameras
Dry Ice Moves on Mars
Dry Ice Moves on Mars
Rover Ready to Switch Gears
Rover Ready to Switch Gears
Rover Readies for Second Drilling
Rover Readies for Second Drilling
'Spring Break' Over; Commanding Resumes
'Spring Break' Over; Commanding Resumes
Mars' Bygone Atmosphere
Mars' Bygone Atmosphere
Viking, Mars Trailblazer
Viking, Mars Trailblazer
In Memoriam: Ray Bradbury 1920-2012
In Memoriam: Ray Bradbury 1920-2012
MAVEN Magnetometer
MAVEN Magnetometer
Mars in a Minute: What Happens When the Sun Blocks our Signal?
Mars in a Minute: What Happens When the Sun...
Previous
    1     2     3     4     5     6     7    
Next