The document discusses the origin of the Moon. It provides a brief history of theories on the Moon's origin from ancient myths to modern scientific studies. The modern consensus is that the Moon formed from the debris of a giant impact between the early Earth and a Mars-sized object (giant impact theory). Computer simulations in the 1970s-1980s showed this scenario can explain the Moon's composition and the angular momentum of the Earth-Moon system. The giant impact theory remains the most widely accepted explanation for how the Moon originated.
5. 全ての点はいつか必ず繋がる
“You can’t connect the dots looking forward;
you can only connect them looking backwards.
So you have to trust that the dots will
somehow connect in your future”
-Steve Jobs (2005)