A proposed Mars helicopter mission would search for signs of life, water and future human footholds in a vast volcanic canyon ...
The dust devil was about 210 feet wide, NASA said, but likely didn't last long after consuming the smaller whirlwind.
NASA has revealed the mission patch for Artemis II, a mission that will take humans around the moon for the first time in decades.
A strange rock covered in tiny spheres may hold secrets to Mars’ watery — or fiery — past.
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