Strange Solar Systems
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Strange Solar Systems [sina.com.cn]
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This year, astronomers got their first good views of several distant planetary systems and discovered that things are pretty weird out there. First, NASA's Kepler observatory helped identify a star system with planets orbiting in ways that today's models cannot explain. Then, researchers discovered a gas giant caught in a rare "retrograde" orbit, a planet circling a binary star system, and 10 planets that seem to be freely floating in space—all unlike anything found in our own solar system.
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