X-ray astronomy satellite

3 satellites and probes

Spacecraft	Launch	Operator	Launch vehicle
X-ray Imaging and Spectroscopy Mission	September 6, 2023	National Aeronautics and Space Administration, Japan Aerospace Exploration Agency	H-IIA
Hitomi	February 17, 2016	Goddard Space Flight Center, Institute of Space and Astronautical Science	H-IIA
Advanced Satellite for Cosmology and Astrophysics	February 20, 1993	—	M-3S2