Ahh .. another PhysOrg article which gives a bit more detail on what's so neat about this study …
Galaxy Evolution Explorer finds dark energy repulsive
Quote:
They {the results} contradict an alternate theory, where gravity, not dark energy, is the force pushing space apart. According to this alternate theory, with which the new survey results are not consistent, Albert Einstein's concept of gravity is wrong, and gravity becomes repulsive instead of attractive when acting at great distances.
"The action of dark energy is as if you threw a ball up in the air, and it kept speeding upward into the sky faster and faster," said Chris Blake of the Swinburne University of Technology in Melbourne, Australia. Blake is lead author of two papers describing the results that appeared in recent issues of the Monthly Notices of the Royal Astronomical Society. "The results tell us that dark energy is a cosmological constant, as Einstein proposed. If gravity were the culprit, then we wouldn't be seeing these constant effects of dark energy throughout time."
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.. a case of where my ignorance about the existence of this 'theory' led to my confusion about what these guys were trying to disprove.
… Hang on a minute ...!!… Alex's (push gravity) theory may have just bitten the dust (?)
Cheers