Moon's formation: Earth-Theia collision far more violent than previously thought - Printable Version +- Scivillage.com Casual Discussion Science Forum (https://www.scivillage.com) +-- Forum: Science (https://www.scivillage.com/forum-61.html) +--- Forum: Astrophysics, Cosmology & Astronomy (https://www.scivillage.com/forum-74.html) +--- Thread: Moon's formation: Earth-Theia collision far more violent than previously thought (/thread-726.html)

Moon's formation: Earth-Theia collision far more violent than previously thought - C C - Apr 9, 2015 http://www.sci-news.com/space/science-moon-formation-earth-theia-collision-02678.html EXCERPT: According to the giant impact hypothesis (sometimes called the Big Splash, or the Theia Impact), our Moon was created 4.5 billion years ago in a catastrophic collision between Earth and an impactor the size of Mars, known as Theia. Over the past years planetary researchers have simulated this process and reproduced many of the properties of the Earth-Moon system. However, these simulations have also given rise to the so-called Lunar Paradox problem – the Moon appears to be made up of material that would not be expected if the collision theory is correct. Now, a new study published in the journal Nature has generated an isotopic ‘fingerprint’ of the Moon that could help researchers solve this problem.... RE: Moon's formation: Earth-Theia collision far more violent than previously thought - Mr Doodlebug - Apr 10, 2015 If the two bodies are the same in composition, then either one body split into two  or the impact mixed them thoroughly or they formed separately from the same stuff.