# The complete observatory in a clean room

![The complete observatory in a clean room](https://assets.science.nasa.gov/dynamicimage/assets/science/missions/rst/cleanroom-photos/complete.jpg?w=1600&fit=clip)

- Released: December 4, 2025
- Category: spacecraft
- Credit: NASA
- NASA source: https://science.nasa.gov/mission/roman-space-telescope/timeline/
- Page: https://roman.mixinvisuals.com/image/p531f4238ce4c/the-complete-observatory-in-a-clean-room/

NASA completes the telescope construction. Technicians joined the inner and outer portions of the Nancy Grace Roman Space Telescope in the largest clean room at the agency’s Goddard Space Flight Center in Greenbelt, Maryland.