*Update: The new launch date for XRISM is 08:42 JST / 00:42 BST / 01:42 CEST on 7 September 2023*

The X-Ray Imaging and Spectroscopy Mission (XRISM) is ready to launch on 7 September 2023 to observe the most energetic objects and events in the cosmos. In doing so, it will unveil the evolution of the Universe and the structure of spacetime.

XRISM is a collaboration between the Japan Aerospace Exploration Agency (JAXA) and NASA, with significant participation from ESA. The launch will be streamed live in Japanese and English on JAXA’s YouTube channel.