宇宙苍穹剧情简介
Intryingtocomprehendouruniverse,justhowbigisbig?Howfarisfar?ThisusersguidetothecosmoswillbringtheincomprehensibledowntoahumanscalesuchasVenusmeltingatank,thedensityofablackholecomparedto1000carsinaCokecan,andthecometsintheSolarSystemequatedtograinsofsugarweighinghalfaton.
