Dark Energy

Einstein was correct.

(cue creepy music)

"Dark energy makes us nervous," said Sean Carroll, a theoretical physicist at the California Institute of Technology who was not involved in the supernova study.

Me too, bud. Me too.

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And there's also some energy latent in empty space itself, something we call dark energy, and that's what's controlling the expansion of the universe. So we've learned that the universe has these rather mysterious ingredients. -------- Martin Rees