In another sign that the Trump White House is aggressively moving to slash NASA’s science programs, dozens of mission leaders have been asked to prepare "closeout" plans by the end of next week.
The new directive came from NASA's senior leadership on Monday, which is acting on behalf of the White House Office of Management and Budget. Copies of these memos, which appear to vary a little by department, were reviewed by Ars. The detailed closeout plans called for must be prepared by as soon as July 9 for some missions, which has left principal investigators scrambling due to the tight deadline and the July 4 holiday weekend.
Projects should prepare their plans assuming closeout direction is given on October 1, 2025, one of the NASA memos states. Missions in operations—that is to say, spacecraft whizzing around the Solar System conducting science right now—should "assume closeout is complete within 3 months."
The memos are careful to state that the preparation of these closeout plans is for the purposes of a "planning exercise only." However, multiple scientists familiar with the new directive from NASA's leadership do not believe these closeout plans are merely for planning purposes.
Instead, based on the budget process to date and statements from the White House, they view the memos as an effort by the Trump administration to move forward with canceling as many NASA science missions as possible before Congress passes a budget for the upcoming fiscal year, 2026. This fiscal year begins on October 1, three months from today.
Science at risk
The Trump White House released its proposed budget for NASA a little more than a month ago, seeking to reduce NASA's budget by about 24 percent, from $24.8 billion this year to $18.8 billion in fiscal year 2026. Some areas within the budget were hit harder than others, particularly the Science Mission Directorate, which sustained nearly 50 percent in proposed cuts.