 Since its launch in December 2021, the James Webb Space Telescope JWST has been breaking records. Now the instrument has spotted its first planet around a star other than our own, and with an estimated diameter equaling around 99 percent of Earths it looks somewhat familiar. Observations from NASAs Transiting Exoplanet Survey Satellite TESS hinted ... JWST Just Confirmed Its First Exoplanet, And Its The Size of... 