Proposed NASA Budget Cuts Would End Chandra X-Ray Observatory

A NASA committee determined that the Chandra X-ray Observatory would have to cease operations under the proposed budget cuts in NASA's 2025 budget. The committee reviewed various options but found that only shutting down Chandra fit within the proposed budget, although alternatives could keep the observatory running with limited capabilities. SpaceNews reports: NASA established the Operations Paradigm Change Review (OPCR) committee this spring to look at ways of reducing the costs of operating Chandra and the Hubble Space Telescope as part of broader efforts to deal with a billion-dollar shortfall in agency science funding. The fiscal year 2025 budget proposal included a 40% cut in Chandra's budget, with further reductions through 2029, while cutting Hubble's budget by 10% in 2025. Astronomers strongly opposed the proposed cuts, particularly for Chandra. They argued that the reductions would effectively shut down the telescope, a conclusion backed by Patrick Slane, director of the Chandra X-Ray Center, in an open letter shortly after the release of the budget proposal. The OPCR concurred. "The committee agreed that the continuation of a scientifically viable Chandra mission is not possible within the funding guidance," said Rob Kennicutt, an astronomer from the University of Arizona and Texas A&M University who served on the review committee, in a July 23 presentation at a meeting of the Astrophysics Advisory Committee, or APAC. "This is a serious threat to the observatory." Shutting down Chandra was one of four options presented to the OPCR by the Chandra team and the only one, he said, that fit within NASA's proposed budget profile. Three others would keep Chandra going with reduced capabilities and with budgets higher than what NASA proposed but below current levels. "We think it's possible to run Chandra for less money" than today, he said, "but more than what they were given."

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