The James Webb Space Telescope has produced a new portrait of the atmosphere of exoplanet WASP-39b, a "hot Saturn" some 700 light-years away.

The consortium of laboratories that has developed the MIRI instrument for the JWST is benefiting from guaranteed observation time.

An international team of scientists, including a researcher from Irfu's Astrophysics Department, used several space and ground-based telescopes, including the James Webb Space Telescope and the European Southern Observatory's Very Large Telescope, to observe an exceptionally bright gamma-ray burst detected on March 7, 2023, GRB 230307A, and identify the neutron star merger that generated the explosion responsible for the burst.

For the 17th edition of the Prix Jeunes Talents France, the L'Oréal Foundation rewarded 35 brilliant young female researchers in France, selected from 618 eligible applications by a jury of excellence comprising 32 researchers from the French Academy of Sciences.

Using the James Webb Space Telescope, a group of astronomers led by MPIA, in collaboration with a team from the Astrophysics Department of CEA Paris-Saclay, searched for an atmosphere on the rocky exoplanet TRAPPIST-1 c.

On October 9, 2022, at 13:16 and 59.99 seconds, a gamma-ray burst (GRB) dazzled almost all the X-ray and gamma ray detectors available at the time.

Discovered in 2009, exoplanet GJ1214b orbits a small star just 40 light-years away. With a mass around six times that of Earth and an atmosphere made up of hydrogen and helium, it is considered a "mini-Neptune".

An international team of researchers has used NASA's James Webb Space Telescope to measure the temperature of the rocky exoplanet TRAPPIST-1 b.

Nine months after its launch, the James Webb Space Telescope provides unprecedented images of an exoplanet, the first ever obtained in the mid-infrared. These images should revolutionize our knowledge of extrasolar worlds.

The dawn of a new era in astronomy has begun as the world discovers for the first time the full capabilities of the NASA/ESA/CSA James Webb Space Telescope.

On the evening of the 28th, we could read on NASA's blog: "It's official, the alignment of NASA's James Webb Space Telescope is now complete"! To say that all the instruments of the James Webb Space Telescope are perfectly aligned, means that the primary mirror is well adjusted.

Planets that are strongly irradiated by their host stars develop extended atmospheres that can be probed during transits.

TO BE TRANSLATED Après une sélection sévère, les premières cibles d'observation du télescope spatial James Web (JWST) qui doit être lancé au printemps 2019, viennent d'être dévoilées.

The realization of MIRIM-OB, the optical bench of MIRI (Mid Infra Red Imager), one of the four instruments which will equip the forthcoming space telescope JWST has just completed an essential step with the demonstration that it fulfills the various and rigorous constraints imposed by its use in space.