Tag: Dark Energy

  • Nation & World

    Most precise accounting yet of dark energy and dark matter

    Analyzing more than two decades’ worth of supernova explosions, astrophysicists now have the most precise limits yet on the composition and evolution of the universe.

    7 minutes
    remnant left over from a Type Ia supernova
  • Nation & World

    Tweaking the universe

    In a question-and-answer session, Harvard astronomy chair Avi Loeb explains the new data from the European Space Agency’s Planck satellite.

    7 minutes
  • Nation & World

    Using galaxies as yardsticks

    Astronomy Professor Daniel Eisenstein is using a new understanding of spacing between galaxies to build a 3-D map of the cosmos and confirm theories about its structure.

    4 minutes
  • Nation & World

    Nobel origins

    All three winners of the 2011 Nobel Prize in physics have connections to Harvard — including two whose Ph.D.s launched them into their winning notion of an accelerating universe and the puzzle of dark matter.

    6 minutes