{
  "id": "astro-ph/0207199",
  "version": "v1",
  "published": "2002-07-10T15:30:08.000Z",
  "updated": "2002-07-10T15:30:08.000Z",
  "title": "Measuring spacetime: from big bang to black holes",
  "authors": [
    "Max Tegmark"
  ],
  "comment": "Invited review for Science, 4 figs. Slightly abbreviated published version available at http://www.hep.upenn.edu/~max/spacetime.html",
  "journal": "Lect.Notes Phys.646:169-189,2004",
  "categories": [
    "astro-ph",
    "gr-qc",
    "hep-th"
  ],
  "abstract": "Nerd abstract: Observational constraints on spacetime are reviewed, focusing on how the underlying physics (dark matter, dark energy, gravity) can be tested rather than assumed. Popular abstract: Space is not a boring static stage on which events unfold over time, but a dynamic entity with curvature, fluctuations and a rich life of its own which is a booming area of study. Spectacular new measurements of the cosmic microwave background, gravitational lensing, type Ia supernovae, large-scale structure, spectra of the Lyman alpha forest, stellar dynamics and x-ray binaries are probing the properties of spacetime over 22 orders of magnitude in scale. Current measurements are consistent with an infinite flat everlasting Universe containing about 30% cold dark matter, 65% dark energy and at least two distinct populations of black holes.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2002-07-10T15:30:08.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "black holes",
      "big bang",
      "measuring spacetime",
      "flat everlasting universe containing",
      "dark energy"
    ],
    "tags": [
      "review article",
      "journal article"
    ],
    "publication": {
      "journal": "The Early Universe and Observational Cosmology",
      "year": 2004,
      "volume": 646,
      "pages": 169
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 590213,
      "adsabs": "2004LNP...646..169T"
    }
  }
}