The James Webb Space Telescope successfully completed the unfolding of its giant gold mirror on Saturday. This rounds out some of the greatest challenges and deployments for Webb since it launched ...

Webb succeeds the Hubble Space Telescope, which, when it was launched in 1990, had a major defect in its primary mirror. Scientists realised very quickly on receiving the first pictures that the ...

While the James Webb Space Telescope is almost at its deep space temperature, NASA officials wrote in an update, there's no firm timeline on when it will get cool enough.

The James Webb Space Telescope hit another milestone this week; NASA announced that the $10 billion observatory's 18 hexagonal mirror segments and its secondary mirror have been fully deployed.

Moving at a quarter of a mile per second in space, NASA’s long-awaited James Webb Space Telescope got its golden wings Saturday in the final stage of its deployment since launch.

Engineers commanded NASA's James Webb Space Telescope to unfurl its over 21-foot wide golden mirrors this week, and the crucial test succeeded.

NASA’s James Webb Space Telescope is nearing completion of the seventh and final step in its alignment process. With its MIRI instrument now cooled to its operating temperature, the telescope is ...

The James Webb Space Telescope's 21.3-foot (6.5 meter) diameter primary mirror. (Image credit: NASA/C. Gunn) Aside from its hexagonal shape and enormous size, Webb's most distinctive feature is ...

The James Webb Space Telescope is now, finally, a fully deployed telescope. On January 8, 2022, NASA made history by successfully unfolding the telescope’s primary mirror — the largest of its ...

The James Webb Space Telescope is not just a remarkable feat of engineering; it’s a beautiful one too. Take its 18 hexagonal mirrors made from gold-plated beryllium, which inspired YouTube’s ...

The James Webb Space Telescope successfully completed the unfolding of its giant gold mirror on Saturday. Posted 6:22 p.m. Jan 8, 2022 — Updated 12:20 p.m. Jan 9, 2022 NO TITLE PROVIDED ...