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Science News, Feb 10, 2007 by Ken Bollers, R. Cowen
"Howdy, Neighbors: Long-term study finds a batch of red dwarfs" (SN: 12/2/06, p. 356) says that a planet so close to a red dwarf would be forced to "rotate in sync" with the star. Is this the same situation that causes the moon to rotate in sync with Earth? KEN BOLLERS, HUDSON, COLO.
Yes. First, the larger body (the red dwarf) pulls the smaller body (the planet) slightly out of round. Then, the bulging" smaller body experiences internal friction that slows its rotation until it spins at the same rate that it orbits" the larger body.--R. COWEN
COPYRIGHT 2007 Science Service, Inc.
COPYRIGHT 2008 Gale, Cengage Learning
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