Scientists have discovered an Earth-sized world that is likely rocky and 95% of the size of Earth.
Gilbert, who led the work, said the newly discovered planet e is 10% smaller than planet d. TOI 700 e takes 28 days to orbit its star, whereas d is on a 37-day orbit.or TESS, observations,TESS's two-year mission allowed scientists to survey solar systems and monitor the brightness of stars for periodic drops caused by planets moving past them. That mission ended in 2020, but TESS expanded, and the new planet was discovered during an additional year of the mission.
"If the star was a little closer or the planet a little bigger, we might have been able to spot TOI 700 e in the first year of TESS data," said Ben Hord, a graduate researcher at ."But the signal was so faint that we needed the additional year of transit observations to identify it." So far, the satellite has created imaging for about 75% of the sky and found 66 new exoplanets, or worlds beyond our solar system. It also indicated 2,100 candidates that astronomers are working to confirm if they are exoplanets.
The new discovery of planet e proves the satellite can help"us find smaller and smaller worlds," Gilbert said.
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