Earth Is Actually Two Planets

[gravetti]

http://www.huffingtonpost.com/entry/...b01d80b2450fd2

[lgmayka]

Note that the two-planet hypothesis is a chosen conclusion. The data itself supports various hypotheses:
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The researchers analyzed seven rocks brought to the Earth from the moon by the Apollo 12, 15 and 17 missions, as well as six volcanic rocks from the Earth’s mantle — five from Hawaii and one from Arizona.
...
“We don’t see any difference between the Earth’s and the moon’s oxygen isotopes; they’re indistinguishable,” said Edward Young, lead author of the new study and a UCLA professor of geochemistry and cosmochemistry.
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