The telescop Transiting Exoplanet Survey Satellite (TESS)

April 18, 2018: Launch of the Tess Space Observatory by a Falcon 9 rocket. After an initial delay of 48 hours, the various phases of the flight went perfectly. It will now take a few weeks for Tess to start its operational mission. As a reminder, the 350kg small telescope has to discover exoplanets close to the Earth thanks to the transits method.
Despite the modest size and budget of Tess it is expected a harvest of several thousand new worlds and may be among them the first true exoterres.
For this reason the most promising planets discovered by Tess will be subject to additional observations by more capable tools such as the James Webb Space Telescope.