2011 Nobel Prize: Dark Energy feat. Sean Carroll
Guest narrator Sean Carroll of Caltech describes dark energy and the acceleration of the universe, the discovery of which was awarded the 2011 Nobel Prize in Physics on October 4th. Tweet...
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You have known for a long time that the universe is expanding.If you look at distant galaxies, they are moving away from us,And the more distant galaxies are moving faster.So really, it’s not really an explosion of galaxies away from us;All galaxies are moving away from all the other galaxies.Space itself is getting bigger.But you would expect that the expansion of the universe is something that will slow down.These galaxies have gravity and they attract each otherSo you would expect that the expansion of the universe will diminish with time.So it was a big surprise in 1998 when we realized that the galaxies were actually speeding up.If you look at one galaxy, non-only it is moving away from us,But tomorrow it will be moving away from us faster.This is what we call the ...
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You have known for a long time that the universe is expanding.If you look at distant galaxies, they are moving away from us,And the more distant galaxies are moving faster.So really, it’s not really an explosion of galaxies away from us;All galaxies are moving away from all the other galaxies.Space itself is getting bigger.But you would expect that the expansion of the universe is something that will slow down.These galaxies have gravity and they attract each otherSo you would expect that the expansion of the universe will diminish with time.So it was a big surprise in 1998 when we realized that the galaxies were actually speeding up.If you look at one galaxy, non-only it is moving away from us,But tomorrow it will be moving away from us faster.This is what we call the ...
