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Official site of the design, build, test and launch of JWST.


Many organizations play a role in the JWST design, construction and in the future collection and distribution of JWST science data.


JWST related Missions.


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Stay tuned! NASA is working to get video updates from Northrop Grumman's clean room, where both halves of the Webb observatory currently reside.

Webb Spacecraft

Zoom in to see the Webb's subsystems (image credit: STSci) or launch the Webb 3d Model for more detail.


2/2/2018 - OTIS Arrives at Northrop Grumman

The two halves of NASA's James Webb Space Telescope now reside at Northrop Grumman Aerospace Systems in Redondo Beach, California, where they will come together to form the complete observatory. Webb's optical telescope and integrated science instrument module (OTIS) arrived at Northrop Grumman Feb. 2, from NASA's Johnson Space Center in Houston, where it successfully completed cryogenic testing.
RELATED: Combined Optics, Science Instruments of NASA's James Webb Space Telescope Arrive in California

1/28/2018 - OTIS has Left the Building

The Webb science payload (OTIS) has departed the Johnson Space Center cleanroom in preparation for it's journey to Northrop Grumman. Both halves of the observatory will be brought together at Northrop Grumman in California, and the observatory will undergo final testing to verify its launch readiness. (Note: OTIS = OTE + ISIM).
RELATED: Follow the STTARS to Find NASA's Webb Telescope

10/20/17 - Chamber A Unlocked

The door to NASA's James Webb Space Telescope's Chamber A is unlocked after 100 days of cryogenic testing. Webb's OTIS scientists and engineers will continue to analyze results from the testing.
RELATED: Webb Telescope's Houston Highlights

July 10, 2017 NASA Closes Chamber A Door to Commence Webb Telescope Testing

The vault-like, 40-foot diameter, 40-ton door of NASA's Johnson Space Center's historic Chamber A sealed shut on July 10, 2017, signaling the beginning of about 100 days of cryogenic testing for NASA's James Webb Space Telescope in Houston.
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