Welcome to the third update about Sector 1751, TESS’s special observation of interstellar comet 3I/ATLAS!

20-s data are available: TESS 20-s and 120-s target pixel files (TPFs) surrounding the path of 3I/ATLAS can be downloaded in bulk here. The corresponding high-level science product, a comet-centered data cube ...

Welcome TESS followers to our latest news bulletin!¹

This week, we are looking at three recent papers from the archive. Enjoy!

In the first paper, astronomers have confirmed the discovery of two low-mass transiting brown dwarfs — TOI-4776 b and TOI-5422 b — found in a sparsely populated region of brown ...

The TESS Project Office announces a new mission policy to enable rapid community follow-up of high-energy transient events occurring in TESS’s field of view while preserving TESS’s tradition of open data with no period of exclusive access.

Under this policy, the mission may extract limited but actionable information ...

Welcome to the second update about Sector 1751, TESS’s special observation of interstellar comet 3I/ATLAS! We have some updates on the status of the observations and the data availability.

Notification of anomaly and data gap: TESS completed 18 hours of Sector 1751 observations before entering safe mode on ...

Welcome to the first update about Sector 1751, TESS’s special observation of interstellar comet 3I/ATLAS!

Sector start and end times: Sector 1751 began 2026 January 15 around 6:00 UTC and ends 2026 January 22 around 12:00 UTC. This is an ecliptic pointing, with the comet’s ...