Unknown: Cosmic Time Machine

Unknown: Cosmic Time Machine is an episode, in the four-episode Netflix documentary series of Unknown, and is about NASA's launch of the James Webb Space Telescope (JWST).

The episode was directed by Shai Gal and was released on Netflix on July 24, 2023.

Plot
The episode follows the development of the JWST, going back to the 1990's, up to the launch and deployment, and finally to the unveiling of some of the first images from the new space telescope.

Reception
Decider gave the episode a mostly positive review, praising its scope and presentation. Jeff Foust of The Space Review described it as "extraordinary".