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Astronomers Find 18 New Planets

Discoveries of new planets just keep coming and coming. Take, for instance, the 18 recently found by a team of astronomers.

"It's the largest single announcement of planets in orbit around stars more massive than the sun, aside from the discoveries made by the Kepler mission," says John Johnson, assistant professor of astronomy at Caltech. The Kepler mission is a space telescope that has so far identified more than 1,200 possible planets, though the majority of those have not yet been confirmed.

Image credit: Rick Peterson/ W.M. Keck Observatory