NASA to launch James Webb Space Telescope by May 2020 NASA to launch James Webb Space Telescope by May 2020 The Announcement Was Made On Tuesday By NASA After Analysing The Remaining Tasks For The Highly Complex Space Observatory. News Nation Bureau | Edited By : Aishwarya A | Updated on: 28 Mar 2018, 04:18:05 PM New Delhi: The National Aeronautics and Space Administration (NASA) has delayed the launch of its $8 billion Hubble space telescope successor, James Webb Space Telescope. The announcement was made on Tuesday by NASA after analysing the remaining tasks for the highly complex space observatory. NASA administrator Robert Lightfoot said, “Webb is the highest priority project for the agency's Science Mission Directorate, and the largest international space science project in US history.”