Thursday, January 26, 2012

Dark Energy

Dark energy

In the 1990s, scientists studying exploding stars called supernovae in far-flung galaxies discovered that the Universe's expansion is accelerating, not slowing as theorists predicted. This discovery led them to the conclusion that some unknown process was causing the Universe to speed up, and they named it dark energy.
One of the biggest goals in science is to explain this mysterious energy, which is thought to make up about 70% of the energy density of the Universe.
Image: A Chandra X-ray Observatory image of the distant galaxy cluster Abell 2029. Astronomers use images like this to better understand dark energy's effects. (credit: NASA/CXC/IoA/S.Allen et al.)

2 comments:

  1. Anonymous5:22:00 PM

    Studying dark energy is well and good .
    What we need;Scientists studying how to show down 'Global Warming.'
    What will we need with the information of dark energy if the earth burn up and blow away .
    First things first .
    Oscar

    ReplyDelete
  2. Oscar,
    You are right (as always). First things first. Our first priority should be saving the planet.
    I think we can spare one or two astronomers to wander among the stars. Who knows, the answer may be out there.
    Your friend, The Genie

    ReplyDelete

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