宇宙初期，4000億星系凝聚成一個(gè)比原子還要小的純能量點(diǎn)。



At the dawn of time, the universe explodes into existence from absolutely nothing into everything. But everything is actually a single point, infinitely small, unimaginably hot, a super-dense speck of pure energy. __________ The entire observable universe was a millionth of a billionth of a centimeter across at that time. Everything was compressed into an incredibly hot, dense region.

訂閱后不但能收到及時(shí)通知，還能看到列表哦。