AXIS knocked out of NASA's Probe competition amid 2025 upheaval

NASA has disqualified the AXIS X-ray telescope from the Astrophysics Probe Explorer competition, saying the concept did not meet the program’s cost and schedule requirements. AXIS’s lead says the setback stems from widespread 2025 agency upheaval and disruptions at NASA Goddard Space Flight Center, including staffing losses and a government shutdown, while NASA maintains AXIS was not compliant with the 2023 AO. With AXIS eliminated, PRIMA remains the sole Probe candidate, prompting concern in the X-ray astronomy community about the field’s future and prompting discussion of pursuing smaller Explorer-class missions and awaiting future opportunities NASA plans to announce.