Moon Photobombs Earth

(Slate::Bad Astronomy) – Phil Plait:

NASA’s Deep Space Climate Observatory, or DSCOVR, is a satellite that orbits the Sun about 1.5 million km from the Earth. That’s a (meta)stable orbit that keeps it between the Sun and Earth, so that when it looks at our planet, it sees its fully illuminated face.

A couple of times per year the dances of the Earth, Moon, and DSCOVR line up so that it sees the Moon pass directly in front of the Earth. And when it does, it’s actually pretty magical. …

bad_astronomy 2016/07/12 dscovr

DSCOVR: Moon in front of Earth

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