Space Policy Edition #13 – The 2018 Budget Proposal and Is Mars Exploration in Retrograde?

Episode Summary

Executive Summary: The episode dissects the Trump administration’s 2018 NASA budget request, arguing that while NASA fares better than many agencies, the overall budget is politically toxic and undermines long-term investment, especially in science and education. The hosts then unveil a Planetary Society report warning that Mars exploration is underfunded, risking sample return, relay infrastructure, and the continuity of the Mars program.

Main Topics: 2018 White House Budget Request: The hosts explain the budget process, note the delayed release of the president’s request, and characterize it as politically dead on arrival because it cuts broadly while favoring defense. NASA’s Overall Budget Picture: NASA receives a modest cut rather than the severe reductions seen elsewhere. Planetary science and astrophysics are relatively protected, but the agency is not growing enough to support future priorities. Human Spaceflight Priorities: SLS, Orion, and Commercial Crew: SLS and Orion remain strongly supported and align more closely with congressional preferences, while commercial crew continues toward completion. However, there is little funding for cislunar infrastructure or future exploration architecture. Earth Science and Education Cuts: Earth science takes the largest hit within NASA’s science divisions, and NASA’s Education Directorate is effectively eliminated, including the Space Grant pipeline that feeds future NASA careers. Europa Mission and Planetary Science Growth: The Europa Clipper mission gets a major funding increase, reflecting growing alignment between NASA and Congress, but the cost trajectory suggests the mission is becoming much more expensive than originally pitched. Mars Exploration Program Analysis: The Planetary Society presents original research showing Mars exploration is entering a dangerous phase: existing orbiters are aging, Mars 2020 has no guaranteed relay infrastructure, and sample return lacks a funded path.

Key Arguments: The budget is unpopular because it cuts many programs across many districts, making it hard for Congress to support. NASA is comparatively shielded, but a flat or shrinking budget over five years is effectively a cut because inflation erodes purchasing power. Eliminating NASA’s education directorate and Space Grant program undermines the future workforce and the agency’s long-term health. SLS and Orion remain politically favored, but the program’s sequential development model is inefficient and slower than a fully funded parallel approach. Europa Clipper is being funded more robustly, but the mission’s cost is climbing and a lander would be difficult to afford alongside other planetary priorities. Mars exploration has succeeded because it has been strategic and sequentially informed, but continued underinvestment now threatens sample return and the broader Mars infrastructure. Mars sample return requires action now because there are only limited launch windows and the samples collected by Mars 2020 cannot safely wait forever. Without a new Mars orbiter and a sample-return architecture, NASA risks losing relay capability and scientific continuity on Mars in the 2020s.

Data Points: NASA proposed budget (FY2018): $19.1 billion - White House request for NASA, down from FY2017 NASA FY2017 budget: $19.65 billion - Prior-year NASA funding level used for comparison NASA cut: About $550 million / 3% - Overall reduction from FY2017 to FY2018 request Planetary science budget: $1.93 billion - Highest proposed planetary science budget in history Earth science budget: $1.75 billion - Requested Earth science funding, down roughly $170 million NASA Education Directorate: $37 million - Funding only to close out obligations; directorate otherwise eliminated Space Grant Program: About $100 million historically - Program cited as routinely doubled by Congress and heavily important to workforce development NSF cut: 11% - Example of broader science cuts in the federal budget DOE Office of Science cut: 20% - Broader science reduction highlighted in budget discussion NIH cut: $6 billion - Example of sweeping cuts to non-defense discretionary spending Europe Clipper request: $425 million - White House request for Europa flyby mission, sharply higher than prior year Europa Clipper FY2017 request: $50 million - Prior-year White House request compared to congressional support Congressional Europa funding: $275 million - Amount Congress provided in response to the prior-year request SLS request: $1.9 billion - White House funding for Space Launch System Orion request: $1.2 billion - White House funding for Orion crew vehicle Commercial crew: Declining as development matures - Budget falls naturally as Boeing and SpaceX development milestones are completed Mars 2020 launch window: 2020 - Current rover development is tied to a specific Mars launch opportunity Mars launch opportunities: Every 26 months - Reason Mars mission planning must be sequenced carefully Curiosity minimum data requirement: 250 megabits per day - Minimum science/operations data return needed for rover success Curiosity direct-to-Earth rate: 1 kilobit per second - Illustrates how inadequate direct communication would be without orbiters Mars relay orbiters: Odyssey launched 2001; MRO launched 2005 - Current data-relay infrastructure is aging Mars sample lifetime: 20 years - Tubes are designed for this lifetime, creating a deadline for sample return Mars sample-return options: 3 - Paper lays out a 2020s return path, a slower 2030s path, and a no-action path Mars mission cadence: No new mission approved in almost five years - Evidence of a slowdown in Mars program development Planetary Society fundraising: About $195,000 - Annual advocacy/space policy program fundraising total from members

Pivotal Quotes: "This is a budget that is resolutely focused on the now and kind of undermines investments that need to be happening for the future." — Casey Dreyer: Summary judgment on the White House budget’s long-term effect on science and exploration "The real problem is, as Jason and I have discussed over beers before, is that this Europa mission has rapidly no longer saving money." — Matt Kaplan: Discussion of how Europa Clipper’s growing cost is eroding the original rationale for the flyby mission "We need to have a parallel program because Mars, you can only launch to Mars every 26 months." — Jason Callahan: Explanation of why Mars exploration requires coordinated, overlapping mission development

Implications: The budget could slow U.S. science, weaken NASA’s future workforce, and delay or derail Mars sample return. For space advocates, the episode argues for immediate congressional action to preserve infrastructure, mission cadence, and long-term exploration capability.