New data strengthens the idea that dark energy is weakening over time. The most important implication of this is that it might mean the universe, rather than expanding forever into a bleak and eternal heat death, might actually eventually start contracting until it collapses into a "big crunch."
@Marvin the Martian
www.nature.com
@Marvin the Martian

Is dark energy getting weaker? Fresh data bolster shock finding
Physicists had long assumed that the elusive force has constant strength. But the latest results from a project to map the Universe’s expansion challenge this idea.
