Dark Energy exsits!

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Scientists don't know much about the mysterious phenomenon known as dark energy, but they do have a picture of what it's doing to the universe, namely, driving it apart.

In what may be the clearest detection of dark energy to date, astronomers at the University of Hawaii looked at microwaves left over from the beginning of the universe some 13.7 billion years ago.
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... sometimes [dark energy] is referred to as anti-gravity or vacuum energy, had spread out the galaxy clusters, as it is doing to all space.
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Previous dark energy studies have a one in 20 chance of being statistically coincidental, Szapudi said.

Dark energy was discovered about 10 years ago and is considered the leading outstanding puzzle in cosmology today.
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Article here.