"Like Earth"

A gaffe prematurely reveals some fascinating new astronomical findings via the Kepler Space Telescope:

In a recent presentation, Kepler co-investigator Dimitar Sasselov preempted the official announcement that the exoplanet-hunting Kepler Space Telescope has discovered about 140 candidate worlds orbiting other stars that are "like Earth."

Usually, announcements like these happen after an official press release, but during the TEDGLobal conference in Oxford, U.K., Sasselov unexpectedly dropped the groundbreaking news in one of his presentation slides.