XRISM

XRISM (for X-ray Imaging and Spectroscopy Mission, formerly XARM for X-ray Astronomy Recovery Mission) is a JAXA soft X-ray observatory space mission with collaboration from NASA and the ESA. It was launched in September, 2023, along with a JAXA experimental Moon lander, SLIM (for Smart Lander for Investigating Moon). XRISM instruments:

• Resolve - microcalorimeter array.
• Xtend - soft X-ray imager.

Each instrument has its own 45-cm telescope. XRISM began as ASTRO-H2 aka ASTRO-H Successor, serving as a replacement for Astro-H (Hitomi), which failed to reach operational status. XRISM's role is to support X-ray astronomy through the 2020s until the next round of major X-ray observatories reach service.