Astronomers are closing in on what looks like a rare prize: a world almost the size of Earth, circling a Sun-like star at a distance that gives it a familiar, year-long orbit. The candidate, known as ...
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This planet is almost exactly the size of Earth, but you would never want to live there
NASA’s Transiting Exoplanet Survey Satellite, or TESS, first flagged the object as a candidate. TESS watches for tiny dips in a star’s brightness, signals that can indicate an orbiting planet, though ...
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