Maybe the vacuum energy driving cosmic acceleration is not a cosmological constant after all, but some other sort of field filling space. (sciencenews.org)
In the past few years, astronomers have solidified the case for cosmic acceleration by studying ever more remote supernovae. (scientificamerican.com)
«We realized that this leakage could cause cosmic acceleration, so maybe there is no dark energy,» Dvali says. (discovermagazine.com)