While NASA astronaut Anne McClain can't take her son to space with her, she's spreading Christmas cheer for all kids watching her cosmic Elf on the Shelf campaign.
from Space.com https://ift.tt/2Ez6HpH
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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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