NASA Administrator Jared Isaacman on Sunday defended the Trump administration’s proposed budget cuts to the agency, saying he supports the reduction even as the Artemis II mission continues its journey toward the moon.
On Friday, the Office of Management and Budget requested $18.8 billion for NASA from Congress for fiscal 2027, representing a $5.6 billion cut from the 2026 allocation. Isaacman confirmed his support for the cuts during a CNN interview, noting that NASA’s budget remains larger than every other space agency worldwide.
What the Left Is Saying
Progressives and Democratic lawmakers have criticized the proposed cuts, particularly to science programs and educational initiatives. The budget would terminate more than 40 missions described as “low-priority” by OMB, including the Mars Sample Return mission and the SERVIR climate partnership with the U.S. Agency for International Development, which cost $10 million annually.
The proposed $143 million cut to NASA’s Office of Science, Technology, Engineering and Mathematics Engagement would eliminate a program that provided millions in funding to engineering and data science initiatives at historically Black colleges and universities. Democrats have argued that cutting HBCU programs runs counter to stated administration goals of supporting minority institutions.
Environmental advocates have also raised concerns about cuts to climate-focused programs, with some arguing that terminating SERVIR undermines U.S. international climate cooperation efforts.
What the Right Is Saying
Conservative supporters of the budget say the cuts represent necessary fiscal discipline amid rising national debt. They argue NASA can achieve its core priorities—particularly the Artemis lunar program—with a reduced budget by eliminating lower-priority missions.
Isaacman has emphasized that despite the cuts, the budget fully funds key priorities including the Artemis program, which would receive $8.5 billion. He outlined several major missions that remain on schedule: the Grace Roman Space Telescope launch in late 2026, a nuclear-powered octocopter mission to Saturn’s moon Titan in 2028, and the continued path toward lunar landing missions in 2027 and 2028.
Supporters note that the One Big Beautiful Bill Act, signed into law last July, provided nearly $10 billion for NASA moon and Mars missions, giving the agency sufficient resources to pursue its flagship objectives while trimming what they characterize as lower-priority spending.
What the Numbers Show
The proposed budget requests $18.8 billion for NASA, a 23% reduction from the $24.4 billion allocated for fiscal 2026. Key cuts include: $3.4 billion from NASA’s science unit, $1.1 billion from the International Space Station (scheduled for retirement in 2030), $297 million from space technology, and $143 million from STEM engagement programs.
The Artemis program would receive $8.5 billion, which OMB says fully funds lunar landers, space suits, surface systems and astronaut transportation. NASA’s budget remains larger than all other national space agencies combined.
The Artemis II mission is currently underway, with four astronauts—Victor Glover, Christina Koch, Reid Wiseman and Jeremy Hansen—preparing to orbit the moon. The crew is expected to pass behind the moon within 24 hours of Isaacman’s comments, setting a record for human distance from Earth.
The Bottom Line
The proposed budget cuts represent a significant reduction in NASA funding while maintaining substantial investment in the Artemis lunar program. Isaacman’s public support for the cuts provides administration backing for the proposal as it moves to Congress.
The debate now shifts to Capitol Hill, where appropriators will determine whether to accept the proposed cuts or advocate for restoring funding to science missions and educational programs. Lawmakers from states with NASA facilities and advocates for HBCUs are expected to push back on specific cuts. The outcome will shape which missions proceed and which are terminated as the agency prioritizes its lunar ambitions within a tighter budget envelope.