Gamma-ray burst study may rule out cosmological constant
Gamma-ray burst study may rule out cosmological constant
Dark energy - the mysterious force that drives the acceleration of
the universe - changes over time, suggest controversial new
calculations.
If true, the work rules out Einstein's notion of a "cosmological
constant" and suggests dark energy, which now repels space, once
drew it together.
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http://www.newscientistspace.com/article/dn8566