The James Webb Space Telescope

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


News and Highlights

08 May 2017 JWST's payload module (OTIS) arrives at NASA's Johnson Space Center.

After an extensive and very succesful period of integration and testing at NASA's Goddard Space Flight Center, in Greenbelt, Maryland, JWST's payload module (the telescope and its instruments) called OTIS has been shipped to the Johnson Space Center where it will have its final thermal vacuum testing. Detailed information can be found in the following press release issued by NASA:


The Call for Proposals for the Early Release Science program has been released. This call is only open to proposers who submitted Notices of Intent (NoI) by the March 3 deadline. Proposals should be submitted using the Astronomers Proposal Tool and are due by Aug 18, 2017 8:00pm EDT. Proposers must identify the NoI corresponding to their proposal. The results of the selection will be announced in Nov 2017.

The full call can be found on STScI's web site:

News and Highlights - Archive

The mission

JWST newsletter

JWST's instruments

JWST is a joint NASA/ESA/CSA mission


Mission Status:

Launch in October 2018


28-29 June 2017 in Prague, Czech Republic

JWST session at the European Week of Astronomy and Space Science (EWASS)

04-06 October 2017 in ESAC, Spain

ESAC 2017 JWST workshop - Planning your JWST observations - [GET SET]

Image of the month:


JWST is being prepared to enter the enormous cryogenic chamber at NASA’s Johnson Space Center in Houston, where it will undergo comprehensive testing at temperatures similar to those of the environment at L2. 

(Credit: NASA)

Image of the Month - Archive