News of the WeekAstronomy

A World With Two Suns

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Science  20 Aug 1999:
Vol. 285, Issue 5431, pp. 1191-1193
DOI: 10.1126/science.285.5431.1191a

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Buried in the unusual twinkling of a star near the center of our galaxy, an international team of astronomers has uncovered the first evidence of a planet orbiting two stars at once. If other observers can confirm it, the Jupiter-sized planet will be more than an astronomical novelty. Its detection will become a triumph for a new and potentially powerful technique for finding planets around other stars, based on the lensing of a background star by the gravity of unseen stars and planets moving across the line of sight.