The James Webb Space Telescope

Welcome to ESA's website for JWST's scientific community


News and Highlights

28 June 2018 - Updates to the JWST Cycle 1 Proposal Timeline. Following the announcement of a new launch date by NASA (see below), STScI has published a short piece of news with information about the expected timeline for the call for proposals for cycle 1 (relative to launch). The full text can be found here.

27 June 2018 - NASA Completes Webb Telescope Review, Commits to Launch in Early 2021. The full text of the news release can be found here.


The Call for Proposals for the Early Release Science program is now closed. The results of the selection have been announced (here). More details can be found on STScI's web site.

The Guaranteed Time Observer (GTO) team have also submitted their proposals on the 31st of January 2018. More details can be found here.

All the proposal files for the ERS and GTO programs are public and can be retrieved directly in the Astronomer's Proposal Tool (APT) using the proposal number provided in the STScI web sites. It is also possible to access the pdf version of the proposal here.

News and Highlights - Archive

The mission

JWST newsletter

JWST's instruments

JWST is a joint NASA/ESA/CSA mission


Mission Status:

Launch in March 2021


23-27 July 2018 at ESA/ESTEC in the Netherlands

Meeting "The Near, The Far, and the In-between: Synergy between low and high redshift galaxy evolution studies in the era of JWST and EUCLID". Deadline for the abstract submission and the pre-registration: 31 March 2018. See here.

20-22 August 2018 in Vienna, Austria

Focus meeting "JWST: launch, commissioning and cycle 1 science" during the 2018 IAU General Assembly

More complete list of events maintained by STScI: here.

Image of the month:


JWST is being rolled-out of the enormous cryogenic chamber at NASA’s Johnson Space Center in Houston, where, in the previous months, it underwent comprehensive testing at temperatures similar to those of the environment at L2. 

(Credit: NASA)

Image of the Month - Archive