NASA's Viking 1 Mars lander pulled off the first American touchdown on the Red Planet 42 years ago today (July 20). The mission reshaped our understanding of Mars and paved the way for future exploration.
from Space.com https://ift.tt/2LbevSc
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By BY RAYMOND ZHONG from NYT Technology https://ift.tt/2ZVzHzt
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By BY NATHANIEL POPPER from NYT Technology https://ift.tt/31OxrNi
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The blood-red color of the moon during a total lunar eclipse may be difficult to explain without a basic understanding of orbital mechanics,...
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