James Webb Space Telescope deploys radiator to keep cool

NASA’s new high-tech, low-temp observatory observatory is one step closer to gathering some cool science.

The James Webb Space Telescope launched on Dec. 25 and has spent its time in space so far executing a complicated sequence of deployments to unfold the telescope to its final configuration. On Thursday (Jan. 6), the mission team notched another step of that sequence when at about 8:48 a.m. EST (1348 GMT), the telescope’s Aft Deployable Instrument Radiator (ADIR) swung into place, according to a NASA statement.