Washington D.C. – A draft budget proposal from the Donald Trump administration, slated to be submitted to Congress, reportedly includes a nearly 50% reduction in NASA's science budget, sparking widespread concern. The plan threatens to derail billions of dollars in upcoming major space exploration missions.
According to two sources who spoke on condition of anonymity, the draft budget from the White House Office of Management and Budget (OMB) to NASA proposes slashing the budget for the Science Mission Directorate from its current level of approximately $7.3 billion to $3.9 billion. The White House did not immediately respond to a request for comment. NASA spokesperson Bethany Stephens issued a brief statement saying, "NASA has received the draft Fiscal Year 2026 budget from OMB and is currently undergoing internal review."
While not yet officially submitted to Congress, the draft budget raises fears of mass cancellations of NASA's ambitious planetary and astronomical observation missions, including the development of next-generation major space telescopes and the Mars Sample Return mission – a cornerstone project aimed at finding signs of ancient life on Mars.
NASA's astrophysics budget is projected to plummet from roughly $1.5 billion to $487 million, planetary science from $2.7 billion to $1.9 billion, and Earth science from approximately $2.2 billion to $1.033 billion.
Casey Dreier, chief of space policy at the Planetary Society, described the proposed cuts as an "extinction-level event" for NASA science. "It would needlessly terminate operating and productive science missions, and cancel new missions currently under construction, wasting vast amounts of taxpayer dollars," he stated, adding that the cuts are "neither efficient nor smart budgeting."
The draft budget reportedly maintains support for the Hubble and James Webb Space Telescopes. However, no new telescope development plans beyond these two would receive funding. This casts doubt on the development of the Nancy Grace Roman Space Telescope, currently undergoing assembly and testing at NASA's Goddard Space Flight Center and scheduled for a launch no later than May 2027. The Roman Space Telescope is designed to observe distant galaxies and exoplanets from an orbit approximately one million miles from Earth.
The draft budget is one step in the process of the President submitting a budget request to Congress for Fiscal Year 2026. The final budget authority rests with Congress, which has the power to restore programs the White House targets for elimination.
Former NASA Administrator Bill Nelson, who served under the Biden administration, warned in an interview, "If the NASA science budget is cut in this barbaric way, NASA will be in a very deep hole." He emphasized that "to undermine NASA science is to undermine the entire NASA exploration program, and that will have a negative impact on the human exploration program as well."
Last month, the science and technology news outlet Ars Technica reported that NASA's science budget could face cuts of up to 50%.
The massive proposed science budget cuts are also expected to severely impact NASA's Goddard Space Flight Center. Maryland Democratic Senator Chris Van Hollen told the Washington Post, "The work done by the brilliant workforce at Goddard is the foundation for all of NASA’s space exploration, so this would be a tremendous loss for our country," adding that the Maryland delegation would fight it vigorously.
He also stated, "I think there will be strong bipartisan opposition in Congress to cutting missions that are the bedrock of our space program. This is like eating our seed corn, and it would have a very damaging impact on our space program, our national security programs, and our leadership in technological innovation and scientific research."
Meanwhile, NASA still awaits the formal appointment of an administrator. Trump's nominee, billionaire businessman Jared Isaacman, appeared before the Senate Commerce, Science, and Transportation Committee for his confirmation hearing last Wednesday, where he faced sometimes heated questioning.
Much of the committee's questioning focused on NASA's human spaceflight plans and whether Isaacman would support the Artemis lunar exploration program, which aims for multiple crewed landings on the Moon and the establishment of a permanent human presence using NASA rockets and spacecraft, as well as lunar landers built by SpaceX and Jeff Bezos' Blue Origin (Bezos owns The Washington Post).
Isaacman expressed support for the lunar exploration program and said it could proceed in parallel with crewed missions to Mars. While he once advocated for prioritizing Mars, under questioning from Senator Ted Cruz, he stated, "I don't think it has to be a binary decision of Moon or Mars, and I don't think it has to be Moon first or Mars first." Mars is a favored destination for President Trump and SpaceX founder Elon Musk, who harbors long-term ambitions of establishing a human civilization on the red planet.
However, Isaacman showed no inclination to cut science programs to boost human spaceflight budgets. Calling himself a "science advocate," he said that if confirmed, "NASA will be a powerful catalyst for science, leveraging the scientific talent and capabilities within NASA to accelerate the pace of world-changing discoveries with academic institutions and industry." He also stated his commitment to "flying more telescopes, probes, and rovers to better understand our planet and the universe beyond."
Key Projects of NASA's Science Mission Directorate:
Planetary Science: Mars rovers (Curiosity, Perseverance), Jupiter probe (Europa Clipper), Saturn probe (Cassini-Huygens), asteroid exploration (OSIRIS-REx), etc.
Astrophysics: James Webb Space Telescope, Hubble Space Telescope, Nancy Grace Roman Space Telescope (under development), Chandra X-ray Observatory, etc.
Earth Science: Climate change and Earth system observation satellites (ICESat-2, GRACE-FO), atmospheric observation missions, etc.
Potential Impacts of Budget Cuts:
Delayed Scientific Discoveries and Lost Opportunities: Answers to crucial scientific questions about the origin of the universe, the search for extraterrestrial life, and understanding Earth's changing environment could be delayed or become impossible.
Hindered Technological Development and Innovation: Reduced investment in advanced technologies required for space exploration could weaken the competitiveness of related industries.
Weakened International Cooperation: The scaling back of major NASA missions could lead to decreased participation in international collaborative research projects, negatively impacting global scientific partnerships.
Disrupted Training of Future Generations of Scientists: A contraction in NASA's scientific research activities could reduce research opportunities for young scientists and engineers, potentially leading to a long-term shortage of talent in the space science field.
Past NASA Budget Cut Examples:
Since the Apollo program, NASA's budget has fluctuated, with instances of significant cuts leading to the cancellation or scaling back of major projects. These past experiences underscore the serious concerns surrounding the potential impact of the current proposed budget cuts on NASA's future.
The Trump administration's push for massive cuts to NASA's science budget could mark a significant turning point in the history of American space exploration, generating considerable controversy within the scientific and space industry communities, as well as globally. The world awaits to see whether Congress will approve these budget proposals or seek alternatives to safeguard NASA's future.
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