55년간 숨겨졌던 달 뒷면의 비밀이 풀리다.
UNIVERSITY PARK, Pa. — The “man in the moon” appeared when meteoroids struck the Earth-facing side of the moon creating large flat seas of basalt that we see as dark areas called maria. But no “face” exists on farside of the moon and now, Penn State astrophysicists think they know why.
“I r…
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15-01-05 00:04