ESA Technology Exchange: Pixpolar pixel has been considered for ESA space programs, although the original article only mentions "A Finnish company [that] has developed a new image sensor technology based on patented MIG (Modified Internal Gate) pixel architecture."
"The Company has participated in the development of a silicon drift detector (SDD) for X-ray applications within the TRP activity. The main goal of the project was to introduce extremely low noise SDD macro-pixels for X-ray detection applications. The Company is able to produce very low noise photon detectors for X-ray, visible, UV, near infra-red, and particle detection applications. MIG sensors are ideally suited for Space application as they enable simultaneously asteroid tracking as well as direct detection of planets around stars through continuous readout. Increasing the frame rate does not increase the noise, there are no interface issues, and they are tolerant to radiation damage."