History Following the premature termination of the Hitomi mission, on 14 June 2016 JAXA announced their proposal to rebuild the satellite. The XARM pre-project preparation team was formed in October 2016. In the U.S. side, formulation began in the summer of 2017. In June 2017, ESA announced that they will participate in XRISM as a mission of opportunity. Instruments XRISM will carry two instruments for studying the soft X-ray energy range, Resolve and Xtend. The satellite will have telescopes for each of the instruments, SXT-I (Soft X-ray Telescope for Imager) and SXT-S (Soft X-ray Telescope for Spectrometer). The pair of telescopes will have a focal length of . Resolve Resolve is an X-ray micro calorimeter developed by NASA and the Goddard Space Flight Center. The instrument will likely not be a complete remanufacture of Hitomi SXS, as there are some space-qualified hardware left from developing SXS, and these spare parts may be utilized to build Resolve. Xtend Xtend is an X-ray CCD camera. Unlike Resolve, which will be a "built-to-print" version of its predecessor, Xtend differs in that its energy resolution will be improved from Hitomi SXI. See also Suzaku List of X-ray space telescopes X-ray astronomy Notes References External links XRISM official website X-Ray Imaging and Spectroscopy Mission (XRISM) at JAXA X-ray Imaging and Spectroscopy Mission at NASA Goddard Space Flight Center Beyond the loss of Hitomi Space telescopes Satellites of Japan X-ray telescopes 2023 in spaceflight Explorers Program