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BBC News - Earth may once have had two moons
"dlzc" wrote in :
.. whereas the far side (with its lack of radiative heat sink at ~293K) could have gotten much stiffer, sooner. From the moon, the Earth does not cover very much of the sky. In any case, the earth is seen as a radiative *source*. It is the empty black sky that appears as a "sink" (~4 Kelvin). The sun is seen pretty much the same from both sides of the moon, notwithstanding relatively rare eclipses. -- http://pages.videotron.ca/duffym/usenet.htm#s.p |
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