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Back To The Beginning: An Empiricist Defense Of Scientific Stories About The Past, Craig William Fox

Electronic Thesis and Dissertation Repository

The Earth has not always been accompanied by its celestial partner, the Moon. In fact, the Moon was acquired by the Earth about 100 million years after the start of the solar system. It was acquired in the aftermath of a massive collision between the Earth and another planet, dubbed “Theia,” the mythological mother of the Greek goddess of the Moon. Most of the iron-rich cores of Earth and Theia merged almost immediately, while the rest of the two planets vaporized. Some of the impact ejecta was lost, but enough remained in gravitationally bound orbit around what was then $ …