Astronomers Reap Rich Crop of Extrasolar Planets, Finding 5 in 'Habitable Zones'

To Steven S. Vogt, searching for planets outside the solar system is a lot like winemaking.

Astronomers select the stars they think will yield the most planets, cultivate and patiently watch those objects for months or even years, then harvest the results.

"We're at the harvest stage now," says Mr. Vogt, a professor of astronomy and astrophysics at the University of California at Santa Cruz.

Last week, like prize-winning vintners, he and his

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