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

Webb passes key launch clearance review
1 July 2021

The international James Webb Space Telescope has passed the final mission analysis review for its launch on an Ariane 5 rocket from Europe's Spaceport in French Guiana.

Selection of the first James Webb Space Telescope General Observer Scientific Programmes
30 March 2021

The General Observer scientific observations for the NASA/ESA/CSA James Webb Space Telescope's first year of operation have been selected. Proposals from ESA member states comprise 33% of the total number of selected proposals and correspond to 30% of the available telescope time on Webb.

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

From Our Partners

From Our Partners

Webb's golden mirror wings open one last time on Earth
12 May 2021

For the last time while it is on Earth, the world's largest and most powerful space science telescope opened its iconic primary mirror. This event marked a key milestone in preparing the observatory for launch later this year.

NASA's Webb Telescope packs its sunshield for a million mile trip
7 April 2021

Engineers working on NASA's James Webb Space Telescope have successfully folded and packed its sunshield for its upcoming million-mile (roughly 1.5 million kilometre) journey, which begins later this year.

 

NASA's James Webb Space Telescope completes final functional tests to prepare for launch
1 March 2021

February marked significant progress for NASA’s James Webb Space Telescope, which completed its final functional performance tests at Northrop Grumman in Redondo Beach, California.

NASA's Webb Sunshield Successfully Unfolds and Tensions in Final Tests
18 December 2020

Lengthened to the size of a tennis court, the five-layer sunshield of NASA's fully assembled James Webb Space Telescope successfully completed a final series of large-scale deployment and tensioning tests. This milestone puts the observatory one step closer to its launch in 2021.

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-Jul-2021 07:34 UT

ShortUrl Portlet

Shortcut URL

https://sci.esa.int/jwst