NASA 3D sky-mapping space telescope gets a custom test chamber

A custom-built test chamber for a new NASA space telescope has arrived at Caltech in Pasadena to help ready the spacecraft for launch in 2025.

The Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer, or SPHEREx telescope, is designed to create a unique, 3D map of the entire sky. The survey will map 100 million stars in the Milky Way as well as out galaxies, star-forming regions, and other cosmic phenomena.