Extra testing of the James Webb Space Telescope and delays in assembling the powerful observatory will push back the $10 billion mission’s launch by at least six months to early 2019, officials announced last week as the telescope successfully completed an extensive performance test inside a cryogenic vacuum chamber in Houston.
NASA ordered the launch delay to keep ground teams from rushing to ready JWST for its previous launch date in October 2018. Assembly of the spacecraft at Northrop Grumman’s facility in Redondo Beach, California, ran behind schedule the last few months, consuming most of the remaining slack in the schedule leading up to the launch opportunity next October.
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