Other possible explanations include a change in the gravitational constant G, the effects of cosmic expansion, and even the influence of dark matter. (newscientist.com)
The team's result confirms the accelerated cosmic expansion using a completely different approach, which strengthens the case for dark energy. (kavlifoundation.org)
Scientists had accepted cosmic expansion since 1929, and prior to 1998 they assumed gravitational attraction would gradually bring it to a halt. (discovermagazine.com)