The amount of Martian atmosphere trapped by mineral formation appears inadequate to account for a warm environment when rivers cut valleys on ancient Mars.
from News and Features - NASA's Jet Propulsion Laboratory http://ift.tt/1O97W9N
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The amount of Martian atmosphere trapped by mineral formation appears inadequate to account for a warm environment when rivers cut valleys on ancient Mars.
This artist’s concept depicts a smaller white dwarf star pulling material from a larger star, right, into an accretion disk. Earlier th...
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