NASA is changing how it chooses several classes of science missions. The agency says its new Competition Model 2.0 will reduce proposal burdens, broaden participation and cut the time from an Announcement of Opportunity to a later selection stage by as much as 45 percent.
That is a reasonable objective. Mission competitions can require universities, laboratories and research teams to spend years developing detailed engineering, cost and management plans for concepts that will not be selected. NASA’s own description of the new model acknowledges that the existing process has been lengthy, unpredictable and expensive.
But the reform does not remove the difficult work of designing a spacecraft. It moves more of that work later in the process, after NASA has narrowed the field. The important question is therefore not whether NASA can choose missions faster. It is whether the agency can preserve independent technical scrutiny while doing so.
A faster first stage
In an October 21 letter, Science Mission Directorate Associate Administrator Nicola Fox described Competition Model 2.0 as a way to “compete on the science first.” For Astro-Probes, New Frontiers and Discovery missions, the first stage will ask for a compelling science case, a science implementation plan and a proof-of-concept mission design. NASA says this removes roughly half of the material previously required in an initial response.
The second stage will involve a mission implementation study conducted with NASA centers, including Goddard or the Jet Propulsion Laboratory. NASA says the study will evaluate scientific merit, science implementation and mission implementation before a single mission is selected. The selected mission would then complete Phase A with a more mature design before reaching Key Decision Point B, the stage at which NASA determines whether a project is ready to proceed.
For MIDEX and Earth Explorer missions, NASA describes a similar two-step structure with a broader range of implementing organizations, including universities and industry partners. Smaller missions, including SMEX, Earth Venture missions, hosted payloads and rideshares, would move toward a single-step competition with a smaller review team and virtual site visits.
NASA estimates that the relevant selection timeline could fall from about 35 months to approximately 19.5 months for some competitions, and from about 32 months to 19 months for others. Those figures are projections for a redesigned process, not results from a completed mission.
NASA’s own announcement is clear about both the ambition and the uncertainty: the changes will be implemented in stages and refined with input from the scientific community.
The problem NASA is trying to solve is real
There is waste in asking every competing team to develop an increasingly elaborate mission architecture before NASA knows which scientific idea it intends to pursue. A university group may need specialized proposal staff, contractors, cost analysts and engineering support simply to remain competitive. Most of that work becomes unusable when another team is selected.
A lighter first stage could reduce that burden. It may allow researchers with strong ideas but less institutional support to compete on more equal terms. It may also let NASA concentrate expensive engineering studies on a smaller number of finalists rather than paying multiple teams to repeat similar exercises.
That distinction matters. Proposal detail is not the same thing as scientific quality, and a large team with a mature contracting office does not necessarily have the best mission concept. Reducing paperwork can be a way of improving competition rather than weakening it.
NASA is also right that its mission-selection process should not become a separate profession practiced mainly by institutions with the money to sustain it.
But engineering detail is not merely paperwork
The caution is that early technical work exists for a reason. A compelling scientific objective does not establish that an instrument can achieve the required sensitivity, that a spacecraft can maintain its thermal environment, that a launch vehicle can accommodate the mass and orbit, or that the mission can be operated within a credible budget.
NASA’s formal project system is built around phases and Key Decision Points. Those gates are intended to determine whether a project is ready to advance, not simply to document that a team has completed another round of paperwork. NASA’s life-cycle guidance describes Key Decision Points as moments when the agency determines whether a program or project is ready to proceed to its next phase.
Competition Model 2.0 may reduce duplicated effort. It may also defer the moment when technical weaknesses become visible. If a problem emerges after NASA, contractors and universities have invested in one selected concept, the agency may face stronger pressure to redesign, overrun or preserve a mission that would have been rejected earlier.
That is not an argument for forcing every proposal team to produce a complete spacecraft on speculation. It is an argument for being precise about which analyses can safely wait and which cannot.
NASA’s institutional record makes the later reviews decisive
NASA has substantial experience managing complex missions, but it also has a long record of cost growth and schedule delay. The Government Accountability Office’s 2026 assessment notes that NASA acquisition management has remained on the agency’s high-risk list for more than three decades. GAO reported that the portfolio’s cumulative schedule delays reached approximately 14 years and cumulative cost growth approximately $4.7 billion in the latest assessment.
Those figures do not prove that NASA’s current competition process is optimal. They do show why cost, schedule, technology readiness and management capability receive sustained scrutiny. A faster selection process will be valuable only if it does not produce a slower, more expensive development process afterward.
NASA says cost and schedule discipline will remain mandatory and that breaches can carry consequences up to and including mission termination. That is an important statement. The practical questions are who will enforce those consequences, how early warning will be made public, and whether NASA will still be willing to cancel a mission after institutions, contractors and international partners have committed money and personnel.
NASA centers could broaden participation—or become gatekeepers
Center involvement is one of the most consequential features of the new model. Pairing a promising team with Goddard, JPL or another implementation organization could provide access to procurement expertise, systems engineering and mission-management experience that smaller institutions lack.
It could also create a new dependency. If successful proposals increasingly require an established relationship with a NASA center, the formal promise to compete on science may coexist with an informal competition over institutional access.
NASA will need to show how teams are paired, how conflicts of interest are managed and whether implementation studies are independent enough to expose weaknesses in favored concepts. It should also publish evidence about participation: who applies, who advances, which institutions receive support and whether the new process changes the distribution of opportunity.
Science priorities still have to become working missions
The National Academies’ planetary-science decadal survey identifies major scientific questions and recommends mission priorities. But a decadal survey does not build a spacecraft. NASA must translate scientific priorities into instruments, launch plans, operations teams and budgets that can survive the realities of development.
That translation is where “science first” eventually meets hardware. Scientific merit should determine which questions deserve serious consideration. It cannot, by itself, determine whether a mission architecture is feasible.
The strongest version of NASA’s argument is that it is wasteful to make every team complete the same expensive engineering exercise before the agency knows which idea it wants to study. The strongest objection is that the early engineering exercise is also a test of whether the idea can survive contact with physical constraints.
The real test will come after the announcement
NASA has scheduled a public town hall for October 26 to explain Competition Model 2.0 and answer questions. The more important evidence will arrive later: the first solicitation issued under the model, the technical criteria NASA retains at the first stage, the structure of the implementation studies and the rules governing cost breaches and cancellation.
NASA should eventually publish performance data comparing the new process with the old one. That comparison should include more than time to selection. It should measure time to confirmation, cost and schedule stability, launch success, scientific performance, data delivery and mission longevity.
NASA is right that a proposal is not a mission, and that forcing every team to build the same expensive paper spacecraft is a poor use of scientific effort. But the engineering work does not disappear when NASA moves it later in the process. It becomes concentrated, more consequential and potentially harder to challenge.
Competition Model 2.0 will succeed only if NASA can demonstrate that it is selecting scientific ideas faster without becoming less capable of discovering—and stopping—the missions that cannot be built.
