One theory suggests this is how Earth's moon was formed. In 1946, Canadian geologist Reginald Daly suggested that during Earth's formation, a Mars-sized protoplanet collided with Earth. The timing of the collis
A modification of the Giant Impact Theory is the “Theia hypothesis,” abrainchild of Princeton theorists Edward Belbruno and Richard Gott. 大碰撞假說的一個脩正版是“忒伊亞假說”,它由普林斯頓大學的EdwardBelbruno和RichardGott共同提出。 At the time of the giant impact, Theia and Earth would have...
And that raises an intriguing counter-theory: maybe that Mars-size impactor, which planetary scientists call Theia, isthe object that became Mercury. If that's correct, the answer to where Mercury's rocky outer layer went might not be under our feet after all. ...
The current theory of how Earth and Moon came to be, as we know them today, is called the Giant-Impact Hypothesis. Essentially, billions of years ago, proto-Earth was all alone as it circled the Sun, until a fateful collision with a Mars-sized protop...