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NASA’s New Planet Hunting Telescope Has Already Discovered Two Earth-Like Planets

Two undiscovered planets beyond our solar system have been found by a NASA telescope which has been orbiting in space for five months. The ‘super-Earth’ and ‘hot Earth’ planets were spotted in solar systems at least 49 light-years away during a $337million mission. NASA’s Transiting Exoplanet Survey Satellite, or ‘TESS’ made the incredible discovery.

NASA expects to pinpoint thousands more previously unknown worlds, perhaps hundreds of them Earth-sized or “super-Earth” sized – no larger than twice as big as our home planet. Those are believed the most likely to feature rocky surfaces or oceans and are thus considered the best candidates for life to evolve.

Scientists have said they hope TESS will ultimately help catalog at least 100 more rocky exoplanets for further study in what has become one of astronomy’s newest fields of exploration. MIT researchers on Wednesday (September 19) announced the discovery of Pi Mensae c, a “super-earth” planet 60 light-years away orbiting its sun every 6.3 days. The discovery of LHS 3844 b, a “hot-earth” planet 49 light-years away that orbits its sun every 11 hours, was announced the next day.

Pi Mensae c could have a solid surface or be a waterworld as the composition of such planets is a mixed bag, Martin Spill, NASA’s program scientist for TESS, said in a phone interview.