Planets and Moons  ID: 11372

Mars Evolution

Story by Elizabeth Zubritsky Released on November 28, 2013
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The history of Mars is a lesson in radical climate change.
What does catastrophic climate change look like? Mars can help answer that question. The Red Planet today is a desert world, cold and dry. Billions of years ago, however, Mars probably had a thick atmosphere that kept the planet warm enough to have water flowing on the surface. To investigate how Mars lost that abundant atmosphere, NASA launched the Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft on November 18, 2013. The spacecraft will orbit Mars and examine the processes that are stripping away what remains of the planet’s fragile upper atmosphere. Understanding what happened on Mars will give us new insight into the habitability of planets and global climate change. Watch the video to see what Mars's radical transformation might have looked like.
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Early Mars likely was wetter and probably looked more like Earth, but as the atmosphere thinned, the planet dried out.
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The Mars of today is dry and dusty, with an atmosphere that is just one percent as thick as Earth's.
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Much of Mars's atmosphere likely disappeared into space as the planet lost the protection of its intrinsic magnetic field.
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NASA's MAVEN spacecraft will enter Mars orbit in September 2014.
 

Related Story

Mars Transition

For More Information

NASA.gov

Story Credits

Visualizer/Animator:
Michael Lentz (USRA)

Producers:
Dan Gallagher (USRA)
David Ladd (USRA)

Lead Scientist:
Bruce Jakosky (LASP)

Lead Writer:
Elizabeth Zubritsky (ADNET)

Please give credit for this item to:
NASA's Goddard Space Flight Center

Short URL to share this page:
https://svs.gsfc.nasa.gov/11372

Keywords:
SVS >> App
NASA Science >> Planets and Moons