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.

News

News

James Webb Space Telescope to launch in October 2021
16 July 2020

The launch of the NASA/ESA/CSA James Webb Space Telescope (Webb) on an Ariane 5 rocket from Europe's Spaceport in French Guiana is now planned for 31 October 2021.

Announcements

Announcements

New deadline for JWST Cycle 1 General Observer Proposals
23 July 2020

After consulting with the JWST Users Committee, STScI, NASA, ESA, and CSA have finalized the review schedule for Cycle 1 proposals. The JWST Cycle 1 General Observer (GO) proposal deadline will be 08:00 p.m. Eastern Time (ET) on Tuesday November 24, 2020. ​​​​​​​

From Our Partners

From Our Partners

NASA's James Webb Space Telescope completes comprehensive systems test
13 July 2020

Now that NASA's James Webb Space Telescope has been assembled into its final form, testing teams seized the unique opportunity to perform a critical software and electrical analysis on the entire observatory as a single, fully connected vehicle.

Tower Extension Test a success for NASA's James Webb Space Telescope
9 June 2020

To test the James Webb Space Telescope's readiness for its journey in space, technicians successfully commanded it to deploy and extend a critical part of the observatory known as the Deployable Tower Assembly.

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.

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.
29-Sep-2020 18:25 UT

ShortUrl Portlet

Shortcut URL

https://sci.esa.int/jwst