NASA's Chandra X-ray Observatory, a venerable cornerstone of high-energy astrophysics for nearly 25 years, is now in jeopardy as funding cuts proposed in President Joe Biden's budget request threaten to wind down the mission over the coming years.
The news of the budget slash has sparked outcry among astronomers, who argue that Chandra remains highly productive and essential to advancing U.S. high-energy astrophysics. Described as an "extinction-level event" for x-ray astronomy in the United States, the potential loss of Chandra has prompted a "SaveChandra" campaign to advocate for its continuation.
X-ray astronomer Andrew Fabian of the University of Cambridge expressed concern over the abrupt shutdown, noting the detrimental impact on the field and the loss of a generation of x-ray astronomers. Elisa Costantini of the Netherlands Institute for Space Research echoed these sentiments, highlighting the significant knowledge gap that would result from Chandra's closure.
Despite a 3% rise in NASA's astrophysics division budget for fiscal year 2025, Chandra faces a substantial cut in operating funds, with proposed reductions from $68.3 million in FY2023 to $5 million by 2029. The anticipated drop in funding is expected to result in layoffs for half of Chandra's 165-person staff and cessation of grants for observing time.
Chandra's contributions to understanding the universe's most dynamic phenomena, from supermassive black holes to supernova remnants, are unparalleled. Its groundbreaking discoveries, including the first detection of x-ray emission from Sagittarius A* and evidence of exoplanets in distant galaxies, underscore its scientific significance.
While Chandra's planned 5-year mission has surpassed expectations, supporters argue for its continued relevance and productivity. They emphasize its critical role in complementing other astronomical instruments and filling vital gaps in scientific understanding.
Astronomers fear the absence of comparable x-ray missions on the horizon and urge action to prevent Chandra's premature shutdown without a viable replacement. With the budget process ongoing, astronomers and the public are encouraged to advocate for Chandra's preservation by engaging with congressional representatives.
As the fate of Chandra hangs in the balance, the astronomical community rallies to ensure its enduring legacy and continued contributions to unraveling the mysteries of the cosmos.
More: https://www.science.org/content/article/nasa-s-x-ray-telescope-faces-long-goodbye
