...e of Public Outreach (NASA) 美国国家航空和宇宙航行局展(公共) OPO Orbiting Planetary Observatory 绕轨道运行的行星 OPO Ovamboland People's Organization Ovamboland人民的组织 ..
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如果一颗星随着时间的推移变亮和变暗，这可能就是一颗绕轨道运行的行星的迹象。
If a star gets brighter and fainter over time, this could be a sign of an orbiting planet.
用它来观看光谱迹象，即一颗恒星因为受到一颗绕轨道运行的行星的引力而在晃动。
This looks for spectral signs that a star is wobbling due to gravitational tugs from an orbiting planet.
一颗不绕轨道运行的行星在一颗遥远的恒星前面经过时，就会因放大恒星的光而暴露自己。
As the planet passes in front of a distant star-one it isn't orbiting-it gives itself away by magnifying the star's light.
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