The release emphasizes TESS’s role in expanding the exoplanet catalog and advancing understanding of planetary systems beyond our Solar System.

TESS surveys the sky sector by sector, spending about a month on each sector, using four cameras to monitor tens of thousands of stars for dips in brightness indicating transiting planets.

As of late 2025, TESS and other missions have identified or confirmed nearly 6,000 exoplanets, reflecting ongoing discoveries into a second extended mission.

Quotes from Rebekah Hounsell and Allison Youngblood underscore the mission’s impact and its promising future.

The image features extreme worlds, including volcanic planets, planets torn apart by their stars, and planets orbiting binary star systems with two suns.

The mosaic reveals nearly 700 confirmed exoplanets as blue dots and more than 5,000 candidates in orange, showcasing a broad range of planetary systems awaiting verification.

Experts note that TESS data, enhanced by automated algorithms, continues to yield surprising findings not only about exoplanets but also about young stars, galactic dynamics, and near-Earth asteroids.

NASA's Transiting Exoplanet Survey Satellite (TESS) released its most complete all-sky mosaic to date, covering 96 sectors observed from 2018 through 2025.

Readers are invited to join the Planet Hunters TESS citizen-science project to learn how to read light curves and spot exoplanet signals.

The mosaic also highlights the dense central plane of the Milky Way, illustrating the survey’s vast reach and scale.

The mosaic also showcases the Milky Way’s bright plane and the Large and Small Magellanic Clouds, lying roughly 160,000 and 200,000 light-years away.