Fact Sheet

Inspired by the success of the Hubble Space Telescope, NASA, ESA and the Canadian Space Agency have collaborated since 1996 on the design and construction of a scientifically worthy successor. Due to be launched in 2021, the James Webb Space Telescope is expected to have as profound and far-reaching an impact on astrophysics as did its famous predecessor.

Announcements

Announcements

Update on the JWST Cycle 1 Proposal Timeline
15 April 2020

Disruptions due to COVID-19 result in further delay to the schedule for JWST Cycle 1 GO/AR proposals. A revised deadline is not announced at this time. An update on the schedule will be provided on 1 June 2020.

News

News

New launch date for James Webb Space Telescope
28 June 2018After completion of an independent review, a new launch date for the James Webb Space Telescope has been announced: 30 March 2021.

From Our Partners

From Our Partners

NASA's James Webb Space Telescope full mirror deployment a success
31 March 2020

In a recent test, NASA's James Webb Space Telescope fully deployed its primary mirror into the same configuration it will have when in space.

NASA's James Webb Space Telescope clears critical sunshield deployment testing
21 October 2019

The sunshield for NASA's James Webb Space Telescope has passed a test critical to preparing the observatory for its 2021 launch. Technicians and engineers fully deployed and tensioned each of the sunshield's five layers, successfully putting the sunshield into the same position it will be in a million miles from Earth.

NASA's James Webb Space Telescope has been assembled for the first time
28 August 2019

Reaching a major milestone, engineers have successfully connected the two halves of NASA's James Webb Space Telescope for the first time at Northrop Grumman's facilities in Redondo Beach, California.

Critical Deployment of NASA Webb’s Secondary Mirror a Success
12 August 2019Technicians and engineers recently tested a key part of this choreography by successfully commanding Webb to deploy the support structure that holds its secondary mirror in place. This is a critical milestone in preparing the observatory for its journey to orbit. The next time this will occur will be when Webb is in space, and on its way to gaze...

Spacecraft Testing

Spacecraft Testing

#14: Tests, moving to a new home, and more tests
4 June 2018In the last year, the James Webb Space Telescope (JWST) and in particular the telescope and the instruments have passed some key milestones on their road towards launch, now planned for 2020.
#13: Testing the coolest instrument on the James Webb Space Telescope
18 October 2017As the James Webb Space Telescope progresses toward launch, the telescope and its scientific instruments are undergoing an arduous series of checks to ensure their flight readiness.
28-May-2020 12:53 UT

ShortUrl Portlet

Shortcut URL

https://sci.esa.int/jwst