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The James Webb Space Telescope (JWST) is a large, infrared-optimized space telescope, scheduled for launch in 2014. JWST will find the first galaxies that formed in the early Universe, connecting the Big Bang to our own Milky Way Galaxy. JWST will peer through dusty clouds to see stars forming planetary systems, connecting the Milky Way to our own Solar System. JWST's instruments will be designed to work primarily in the infrared range of the electromagnetic spectrum, with some capability in the visible range.

JWST will have a large mirror, 6.5 meters (21.3 feet) in diameter and a sunshield the size of a tennis court. Both the mirror and sunshade won't fit onto the rocket fully open, so both will fold up and open once JWST is in outer space. JWST will reside in an orbit about 1.5 million km (1 million miles) from the Earth.

The James Webb Space Telescope was named after a former NASA Administrator.

Want more information?

Image Gallery Watch Webb Telescope being built on our "Webb-cam"!

WHAT'S NEW?

28 July 2010: Six of our mirror passed important cryogenic tests. Read the News Release. View the images.

27 July 2010: Keep your eyes on the newstands - we'll be featured in a cover article in the September 2010 Astronomy Magazine! Check out the cover!.

27 July 2010: There's a new Behind the Webb podcast about the World Science Festival! Watch the video.

19 July 2010: PBS's NOVA did a video blog called "The Next Big Space Telescope". Watch the video.

15 July 2010: NASA Awards the Late Dr. Timothy Hawarden for Contribution to Webb Telescope Read the Feature.

12 June 2010: Behind-the-Scenes Tests with the Webb Telescope's Mass Simulator View the feature.

5 July 2010: Science Friday visited the full-scale model at the World Science Fair, and did some interviews! Watch the Video.

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