Scientists now have a better understanding of three mysteries about the early Earth: what kind of raw materials coalesced to form the Earth long ago, when water arrived on our planet, and why Earth and its moon have such similar compositions.
from Space.com ift.tt/2kpiIAn
Scientists now have a better understanding of three mysteries about the early Earth: what kind of raw materials coalesced to form the Earth long ago, when water arrived on our planet, and why Earth and its moon have such similar compositions.
from Space.com ift.tt/2kpiIAn
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