TESS watched an exoplanet about 1,000 light years away as it repeatedly transited in front of its star for seven years. But astronomers were surprised to find that the hot Jupiter disappeared. Of course, planets don't just disappear. Something interrupted its transits from our point of view, and astronomers think they've figured out what happened. An unseen, nearby giant planet companion tugged on it until TESS couldn't see it anymore.
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