[2][7] A lack of new missions could also deprive young astronomers a chance to gain hands-on experience from participating in a project.

[2][7] Along with these reasons, motivation to recover science that was expected as results from Hitomi, became the rationale to initiate the XRISM project.

This measure was taken as part of ISAS's reform in project management to prevent the recurrence of the Hitomi accident.

[19][Note 2] NuSTAR's spatial and energy resolution is analogous to Hitomi's hard X-ray instruments.

[20] The FORCE (Focusing On Relativistic universe and Cosmic Evolution) space telescope is a candidate for the next ISAS competitive medium class mission.

[20][6] Following the premature termination of the Hitomi mission, on 14 June 2016 JAXA announced their proposal to rebuild the satellite.

[14] XRISM carries two instruments for studying the soft X-ray energy range, Resolve and Xtend.

[2] Resolve is an X-ray micro calorimeter developed by NASA and the Goddard Space Flight Center.

XRISM was successfully inserted into orbit on the same day, and the accompanying launch payload, SLIM, began its multi-month journey to the Moon.