MAVEN

Mission overview

MAVEN studies how Mars lost much of its atmosphere to space over billions of years.

Measured atmospheric escape rates, helping explain Mars's transition to a cold, dry world.

Mission	Type	Agency	Launch	Status
Spirit (MER-A)Mars	Rover	NASA	2003-06-10	Completed
Opportunity (MER-B)Mars	Rover	NASA	2003-07-07	Completed
Mars Science Laboratory (Curiosity)Mars	Rover	NASA	2011-11-26	Active
Mars 2020 (Perseverance)Mars	Rover	NASA	2020-07-30	Active

Facts on this topic will be cited from these primary and reference sources.

NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.

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