In the early stages of the big bang the density of the universe was uniform, yet today the density of matter within heavenly bodies is very high, whereas the space between them is almost a complete vacuum. How did such large differences come about?
宇宙初期爆炸時的密度均勻，現今星球密度卻很高，外太空又是真空狀態，這樣大的起伏是如何演化而成？