Dark energy, science's biggest mystery - CNN.com

A graphic combines the expansion history of the universe from supernova measurements with data from NASA's WMAP satellite.

Editor's note: Meg Urry is the Israel Munson professor of physics and astronomy and chairwoman of the department of physics at Yale University. She is also the director of the Yale Center for Astronomy and Astrophysics. She previously worked as a senior astronomer at the Space Telescope Science Institute, which runs the Hubble Space Telescope for NASA. This piece was written in association with The Op-Ed Project, an organization seeking to expand the range of opinion voices to include more women.

New Haven, Connecticut (CNN) -- On Tuesday, three U.S.-trained scientists won the Nobel prize in physics, for finding definitive evidence that the expansion of the universe is accelerating.

Their discovery did not fit any existing theory, so it had mind-blowing implications for our understanding of the physical world. At the same time, it's relatively easy to [...]

Full article at cnn.com

 

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