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Perspectives on Mars Sample Return: A critical resource for planetary science and exploration.

Harry Y McSween1, Victoria E Hamilton2, Kenneth A Farley3

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The Mars Sample Return mission, a top priority, will revolutionize our understanding of Mars. Analyzing returned samples will provide unprecedented insights into Martian life, geology, and atmosphere.

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Area of Science:

  • Planetary Science
  • Astrobiology
  • Geochemistry

Background:

  • Mars Sample Return (MSR) is a flagship mission priority identified by the National Academies.
  • Previous decadal surveys have consistently ranked MSR as the highest priority for Mars exploration.
  • The mission aims to achieve a revolutionary understanding of Mars, comparable to the impact of Apollo lunar samples.

Purpose of the Study:

  • To investigate ancient Martian rocks, regolith, and atmosphere from Jezero crater.
  • To address critical science questions regarding extraterrestrial life and prebiotic chemistry.
  • To inform future human exploration of Mars and other planets.

Main Methods:

  • Retrieval of diverse geological and atmospheric samples from Mars.
  • In-depth laboratory analysis of returned samples on Earth.
  • Utilizing advanced technological capabilities of NASA and the European Space Agency.

Main Results:

  • Potential for discovery and characterization of ancient extraterrestrial life.
  • Detailed understanding of Mars's past habitable environments and geological evolution.
  • Insights into the formation and evolution of planetary atmospheres and early Solar System dynamics.

Conclusions:

  • MSR will fundamentally advance our knowledge of Mars beyond current spaceborne observational capabilities.
  • The mission will maintain leadership in planetary exploration through technological innovation.
  • Returned samples are crucial for filling knowledge gaps essential for future human missions to Mars.