Ariane 5

Webb telescope testing on tap before setting target launch date

Technicians at a jungle spaceport in South America are completing tests on the James Webb Space Telescope Thursday to make sure they fixed a “finicky” communications interface glitch that halted launch preparations earlier this week. NASA and European officials will confirm the mission’s target launch date — currently penciled in for no earlier than Dec. 24 — as soon as Friday.

Ariane 5

NASA delays launch of Webb telescope to no earlier than Dec. 24

Engineers discovered an intermittent data dropout associated with a piece of ground support equipment after connecting the James Webb Space Telescope with its Ariane 5 launcher over the weekend in French Guiana. The observatory’s long-awaited blastoff will be delayed at least two days to Dec. 24 to troubleshoot the problem, the head of NASA’s science division said Tuesday.