title: The history of the galaxies.
abstract: Astronomical observations now reach far enough back in time, in enough depth and detail, to reveal the history of galaxies since their formation. The early Universe contained a network of gas clouds that filled much of the space between the young galaxies, where stars were forming at a high rate. Since then, intergalactic space has been swept clean, and galaxies have continued to convert the dwindling supply of gas slow into stars.
authors.affiliation: Institute for Advanced Study, Princeton, New Jersey 08540, USA.
authors.forename: M
authors.initials: M
authors.lastname: Fukugita
authors.forename: C J
authors.initials: CJ
authors.lastname: Hogan
authors.forename: P J
authors.initials: PJ
authors.lastname: Peebles
mesh_terms: D055580:Astronomical Phenomena; D001256:Astronomy; D004601:Elementary Particles; D005118:Extraterrestrial Environment; D005740:Gases / Q000032:analysis; D006859:Hydrogen / Q000032:analysis; D013057:Spectrum Analysis
chemical_list: D005740:Gases; D006859:Hydrogen