0:01 string 0:12 quarks and atom 0:17 DNA 0:20 red and white blood cell 0:22 skin 0:24 human 0:25 earth 0:28 solar system 0:31 other stars 0:33 milky way and other galaxies 0:37 local group 0:39 lankea 0:40 universe 0:43 other universe 0:46 the big universe?
