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With TESS, it is possible to study the mass, size, density and orbit of a large cohort of small planets, including a sample of rocky planets in the habitable zones of their host stars.

Apr 13, 2026 · NASA’s Transiting Exoplanet Survey Satellite (TESS) completed its two-year primary mission and continues its search for new worlds. Learn about some of TESS’s most interesting …

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.

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 …

NASA’s Transiting Exoplanet Survey Satellite (TESS) is a space observatory designed to look for exoplanets in orbit around 200,000 nearby bright stars, with a particular interest in identifying small …

The Transiting Exoplanet Survey Satellite (TESS) is a NASA-sponsored Astrophysics that is performing a photometric survey over 85% of the sky and searching for planets transiting nearby stars (within …

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, …

The Transiting Exoplanet Survey Satellite (TESS) is an MIT-led NASA mission designed to discover transiting exoplanets by an all-sky survey. TESS has four identical, highly optimized, red-sensitive, …

TESS Observations TESS observes the sky in sectors measuring 24° x 96°. Each sector is observed for two orbits of the satellite around the Earth, or about 27 days on average.