GJ 1132b, the closest Earth-sized exoplanet yet discovered, may prove greatly beneficial in the difficult search for evidence of life beyond the Solar System. The search will take place with current technologies such as the Hubble Space Telescope and those on the horizon, including NASA’s Transiting Exoplanet Survey Satellite (TESS) and the NASA/European Space Agency James Webb Space Telescope. At 1.2 times the size of the Earth and a matching bulk density that suggests a composition ...

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