![NASA expects retired solar satellite to make an uncontrolled deorbit within the next 22 hours](https://static.techspot.com/images2/news/ts3_thumbs/2023/04/2023-04-18-ts3_thumbs-4a6.jpg)
The Reuven Ramaty High Energy Solar Spectroscopic Imager, usually called Rhessi, was launched into orbit on February 5, 2002, to allow NASA to monitor solar flares. During its 16-year mission, Rhessi recorded over 75,000 solar flares. Rhessi spotted the first “X-class flare” (the strongest type) on April 21, 2002. The…