PDA

View Full Version : Earth Is Actually Two Planets



gravetti
02-05-2016, 02:54 PM
http://www.huffingtonpost.com/entry/earth-two-planets_us_56b280dde4b01d80b2450fd2

lgmayka
02-05-2016, 03:48 PM
Note that the two-planet hypothesis is a chosen conclusion (http://newsroom.ucla.edu/releases/moon-was-produced-by-a-head-on-collision-between-earth-and-a-forming-planet). The data itself supports various hypotheses:
---
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.
---