DARK FAN-SHAPED DEPOSITS IN THE POLAR AREAS OF MARS CHANGE THEIR APPEARANCE AND ORIENTATION DURING SPRING. THEY ARE BELIEVED TO BE THE DEPOSITS FROM COLD CO2 JETS OUTGASSING FROM UNDERNEATH THE SEASONAL CO2 CAP. THE CRYO JETS BRING DUST AND ERODED
$326,498FY2020National Aeronautics and Space AdministrationNASA
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