By 2020 hundreds of earth sized exoplanets should be discovered and many will have basic atmosphere elements detected
Currently there are 3486 confirmed exoplanets (mainly from the Kepler Space telescope survey) and there are 4496 exoplanet candidates and 581 multiplanet systems. We are within about 11 months of the launch of the TESS space telescope. The Transiting Exoplanet Survey Satellite (TESS) will discover thousands of exoplanets in orbit around the brightest stars in …