Chances are good that you've never seen Earth in its entirety, on a planetary scale, with your own eyes. Chances are also good that you have seen a photograph of precisely that — like this very image, the first of its kind.
from Space.com http://bit.ly/2T3o2de
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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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