(New page: The Advanced X-Ray Astrophysics Facility (AXAF) is one of NASA's ''Great Observatories''. It is an X-Ray telescope designed to perform astronomy from low Earth orbit. == Sources ...)
The Advanced X-Ray Astrophysics Facility (AXAF) is one of NASA's Great Observatories. It is an X-Ray telescope designed to perform astronomy from low Earth orbit.