What is the James Webb Space Telescope and when will it launch?

What is the James Webb Space Telescope and when will it launch?

Nasa is preparing to launch a space telescope that will see further into the Universe than anything else ever built. The James Webb Space Telescope (JWST) has taken 30 years and $10bn (£7.5bn) to develop, and is being described as one of the grand scientific endeavours of the 21st Century.

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astronomy telescope