Described at times as a big blue marble, from some vantage points Earth looks
more like a small blue marble. Such was the case in this iconic image of the
Earth and Moon system taken by the Chang'e 5-T1 mission last week. The Moon
appears larger than the Earth because it was much closer to the spacecraft's
camera. Displaying much of a surface usually hidden from Earth, the Moon
appears dark and gray when compared to the more reflective and colorful planet
that it orbits. The robotic Chang'e 5-T1 spacecraft, predominantly on an
engineering test mission, rounded the Moon last Tuesday returned to Earth on
Friday.
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