Chandra watch. Bob Zimmerman BehindtheBlack.com

Photo: The recent launches of the James Webb Space Telescope (Webb) and the Imaging X-ray Polarimetry Explorer (IXPE) by NASA and its international partners are excellent reminders that the universe emits light or energy in many different forms.—NASA

Chandra watch.  Bob Zimmerman BehindtheBlack.com

https://behindtheblack.com/behind-the-black/points-of-information/chandra-in-safe-mode/