The Ultraviolet Imager (UVI) is a small sophisticated camera, which from Earth orbit, will detect and produce images of the ultraviolet light of the aurora, day and night. As such, it is one of eleven instruments onboard the Polar spacecraft, which is the second mission of NASA's Global Geospace Science (GGS) Program.

Today's UVI Image

UVI rides the Polar Satellite
Where is POLAR Now

Recent UVI News
What is the Aurora