Astronomers using NASA’s Transiting Exoplanet Survey Satellite and the High Resolution Echelle Spectrometer on the Keck I telescope at the W. M. Keck Observatory have discovered a system with three transiting exoplanets — including an ultra-short-period super Earth — around TOI-561, one of the oldest stars in our Milky Way Galaxy. TOI-561 is a bright […]
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