Who forwarded the collision hypothesis
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Answer:
Alex N. Halliday
This designation was proposed initially by the English geochemist Alex N. Halliday in 2000 and has become accepted in the scientific community. According to modern theories of planet formation, Theia was part of a population of Mars-sized bodies that existed in the Solar System 4.5 billion years ago.
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Answer:
Robin M. Canup .....................................................
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