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Our article on Lagrangian point is insufficient to understand why Theia destabilized. According to refs presented on the talk page (Talk:Lagrangian point#limiting mass), the situation would be stable as long as M[theia] + M[earth] < 0.04M[sol]. Since M[earth] is only 0.003M[sol], this obviously never happened. Is the reason that it wasn't a 3-body situation? Are these situations simply too chaotic to give any kind of generic account of limiting masses? — kwami (talk) 20:40, 17 October 2012 (UTC)
Removed this sentence: Supporting this theory, extrasolar planets have been discovered in Lagrange points of each other, and are expected to collide, after co-orbiting for millions of years. Since as noted at the top of the cited reference this study has subsequently been updated with one of the planets found to have an orbital period twice that which was originally thought, and thus is not co-orbital with the other planet. Physdragon (talk) 16:51, 16 November 2012 (UTC)
In Section 4 of this article, it says "the team found that the Apollo rocks carried an isotopic signature that was identical with rocks from Earth". What are "Apollo rocks"? Cemkay (talk) 22:09, 8 December 2012 (UTC)