Scientists have confirmed that dark energy is the greatest force expansion of the universe.

<P> Keywords: Scientists dark energy expansion of the universe </ P> <P> from Johns Hopkins University astronomer 艾达姆里斯 (sound, Adam Riess) and his collaborators through the Hubble data .the outbreak of the ancient study of stars found in the past 90 million years time, the expansion of the universe dark energy is the greatest force. .They also found that about dark energy and cosmological constant. .</ P> <P> 1998, when the Hubble telescope and other astronomical data coming from the accelerating expansion of the universe is being shaken by the news of the entire astronomical community. .Prior to this, cosmologists have long known that the universe is expanding, but they believe that the universe's expansion rate under the effect of gravity will continue to become smaller. .The accelerating expansion of the universe that astronomers are puzzled, since physicists are still looking for a reasonable explanation on this issue. .</ P> <P> understanding of the universe - the universe is expanding </ P> <P> on the author by the accelerated expansion of the universe cosmology prize </ P> <P> astronomers said, the reasons for the accelerating expansion of the universe is .may be due to "dark energy" exists, they consider the role of dark energy to offset the gravitational acceleration of promoting the expansion of the universe. .To appear such an effect, dark energy must account for 70% of the total energy of the universe or even more, but so far has not found direct evidence of the existence of dark energy, but scientists can not determine its nature is a stable constant or a time .variables. .</ P> <P> off-day dark energy involved in the "cosmological constant" was first proposed by Albert Einstein, which raises the inference is that regardless of expansion or not, the cosmic vacuum energy density is everywhere equal. .That is, when 1 cubic centimeter to 10 cubic centimeters of space expansion, will in some way ten times more energy. .World Scientific reports </ P> <P> this is now by the Hubble have more understanding of the mysterious energy, Reese and colleagues studied the use of 24 types of telescope-1a supernova emitted light. .This supernova astronomers as the brightness is usually standard, as they have the same brightness, and thus astronomers can guess when they are after the outbreak of the outbreak and how the universe is expanding. .</ P> <P> observation report shows that about 90 million years ago, dark energy began to work, at first less influential, but the data is displayed in six billion years ago, when dark energy and gravity in "cosmic tug of war ."the upper hand, the universe began to accelerate expansion. .Observation report confirms that the cosmological constant is still the best explanation of dark energy, is more reasonable than other theories. .</ P> <P> Einstein in 1917 leads to "cosmological constant" concept is to make his general theory of relativity and the universe is not expanding at the same point of view. .1929, American astronomer Edwin Hubble discovered the expanding universe, Einstein considered the cosmological constant in his life made the "biggest mistake", but the fun is the Hubble Space Telescope, named after the data has been .the cosmological constant was reborn. .World Scientific reports </ P> </ p>.