NASA's Transiting Exoplanet Survey Satellite is an active MIT-led all-sky observatory searching bright nearby stars for transiting planets while also monitoring variable stars, supernovae, asteroids, and other changing objects.
NASA's Transiting Exoplanet Survey Satellite is an active MIT-led all-sky observatory searching bright nearby stars for transiting planets while also monitoring variable stars, supernovae, asteroids, and other changing objects.
Launch Site Id
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Outcome
Active and successful to date. TESS completed its two-year prime survey, continued through successive extended missions, and by September 2025 had identified nearly 6,000 confirmed or candidate exoplanets. Following a brief January 2026 safe mode, it returned to normal science observations on January 18, 2026.