Astronomers were thrilled about the new X-Ray Imaging and Spectroscopy Mission (XRISM), a joint effort by JAXA and NASA, expected to unveil new insights into the universe’s formation and dark matter. However, after its successful launch in September 2023, a crucial aperture door on its main instrument, Resolve, jammed shut, causing significant distress among scientists.
Despite several attempts to remotely open the door, it remains stuck. NASA has confirmed that the telescope’s planned 18-month operation is uncertain as officials deliberate on the best course of action. This issue is particularly disheartening given XRISM’s potential to replace NASA’s aging Chandra X-ray Observatory, which faces its own operational threats due to budget constraints.
Resolve, an advanced X-ray spectrometer, is functioning well otherwise. It can detect X-ray energy with exceptional accuracy, even in extremely cold conditions. However, the jammed door prevents it from measuring low-energy X-rays, though high-energy X-rays remain unaffected.
“I am absolutely gutted that we can’t see below 2 keV,” said Aurora Simionescu, an XRISM science team member.
While this setback limits XRISM’s capabilities, scientists hold on to the hope of resolving the issue and continuing their groundbreaking research.