TOI-2257b is an exoplanet described as a temperate "mini-Neptune", about twice the size of Earth, orbiting a cool star in a highly elliptical orbit of 35 days.  

While the comet Leonard (C/2021 A1) was approaching its perihelion on January 3 and was visible to the naked eye in the Southern hemisphere, the TRAPPIST-South telescope captured this magnificient image of the comet colorful atmosphere and tail.

On the night of 2 January, the ULiège TRAPPIST-Sud telescope at ESO in Chile photographed the James Webb Space Telescope (JWST) moving among the stars in the constellation Orion.

A detailed catalog collected over the past four years with the Very Large Telescope of the European Southern Observatory, with the participation of TRAPPIST telescopes from ULiège.

The origin of the powerful radio emission emitted at the heart of the Apep system was deciphered thanks to the intensive observation of two of its stars.

Shohei Aoki, Emmanuel Jehin, Nicolas Magain and Andy Chevigné, researchers in the ULiège Faculties of Science and are among the fifteen laureates of this year's nominations.

The ULiège's TRAPPIST-South telescope, located in Chile, has resumed its activities by pointing its eye on the Triangulum constellation.

The TRAPPIST-Nord robotic telescope has been monitoring the Near Earth Asteroid 1998 OR2 since the beginning of March.

Using the radio telescopes of the ALMA observatory and the TRAPPIST-South telescope, researchers were able to observe the chemical compounds of the comet discovered in 2019.

Observations using the Very Large Telescope (VLT) and ULiege's two TRAPPIST telescopes revealed the true shape of this planet, previously considered an asteroid.

With the help of telescopes, including TRAPPIST-North from ULiège, the composition of the new comet of extrasolar origin is unveiled

ULg astronomers discovered seven telluric planets around the star TRAPPIST-1. “The TRAPPIST-1 system is the largest treasure of terrestrial planets ever detected around a single star.”