The argon isotope fractionation provides clear evidence of the loss of atmosphere from Mars. (NASA/JPL)
In this latest video update from the Mars Science Laboratory team, Ashwin Vasavada, the mission’s Deputy Project Scientist, discusses the recent finding that the Red Planet doesn’t have the same atmosphere it used to. Curiosity’s microwave oven-sized Sample Analysis at Mars (SAM) instrument analyzed an atmosphere sample and the results provided the most precise measurements ever made of isotopes of argon in the Martian atmosphere.
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