NASA’s TESS discovers exoplanets, worlds beyond our solar system. In the course of its extended observations of the sky, TESS also finds and monitors all types of objects that change in brightness, from nearby asteroids to pulsating stars and distant galaxies containing supernovae.
TESS monitors millions of stars for temporary drops in brightness caused by planetary transits. This first-ever spaceborne all-sky transit survey has identified planets of all sizes.
TESS, the Transiting Exoplanet Survey Satellite, is a NASA mission to discover Earth-size worlds around nearby stars. Promising planets found by TESS will be studied by future telescopes to determine if life could exist there.
TESS Drives a Record-Breaking Discovery from Space In April 2026, astronomers uncovered a major breakthrough hidden within data collected by NASA’s Transiting Exoplanet Survey Satellite (TESS). More than 10,000 possible planets, known as candidate planets, were identified in a single dataset.
Using NASA's exoplanet-hunting spacecraft TESS (Transiting Exoplanet Survey Satellite) and Antarctic Search for Transiting ExoPlanets (ASTEP) on the Antarctic Plateau, astronomers have discovered ...
The Transiting Exoplanet Survey Satellite (TESS) is an Explorer-class planet finder. In the first-ever spaceborne all-sky transit survey, TESS will identify planets ranging from Earth-sized to gas giants, orbiting a wide range of stellar types and orbital distances.
The Transiting Exoplanet Survey Satellite (TESS) is a NASA-led space telescope launched in April 2018, designed specifically for discovering exoplanets using the transit method. This method detects distant planets by measuring the slight dimming of a star’s light as a planet passes in front of it. TESS’s mission focuses on stars closer to Earth, enhancing the potential for detailed follow ...