Summary

EXECUTIVE SUMMARY

The Humans to the Moon & Mars Summit (H2M2), convened in July 2026 at Rice University, brought together NASA Johnson Space Center leadership, aerospace medicine researchers, mission architects, and commercial launch and habitat executives to address the technical, medical, and economic dimensions of sustained Mars exploration. This report documents the summit's session content, the technical concepts discussed, and the unresolved questions identified by presenters and attendees, without interpretation beyond what was directly presented.

SUMMIT SCOPE AND INSTITUTIONAL PARTICIPATION

Over three days, H2M2 convened organizations engaged in the return to the Moon and planning for initial Mars missions. Session content spanned nuclear propulsion architecture, commercial space station development, astronaut health protocols, and engineering constraints relevant to sustained Martian presence.

●        “Artemis II: Return to the Moon” (moderated by Joseph Cassady, Director of Civil Space, L3Harris; panelists from NASA, Amentum, Northrop Grumman, and Lockheed Martin)

●        “A Conversation with Vanessa Wyche” (Director, NASA Johnson Space Center; facilitated by Mat Kaplan, Senior Communications Adviser, The Planetary Society)

●        “Nuclear Systems Propelling Mars Exploration” (moderated by Joseph Cassady, Director of Civil Space, L3Harris; panelists from NASA, L3Harris, and Intuitive Machines)

●        “Protecting the Physical + Mental Health of Astronauts” (moderated by Dr. Erik Antonsen, Acting President, OSMED; panelists from NASA Johnson Space Center and KBR, Inc.)

●        “Commercial Payload Services to the Moon + Mars” (moderated by Dr. Shawna Pandya, Suborbital Astronaut and Physician, IIAS; panelists from Intuitive Machines, Firefly Aerospace, and Astrobotic)

●        A structured brainstorming workshop on commercial capability integration for crewed Mars missions (facilitated by Humphrey “Hoppy” Price, NASA JPL), producing working documentation used directly by NASA and industry leadership for near-term mission architecture planning

MISSION ARCHITECTURE: CONCEPTS UNDER DISCUSSION

The commercial capabilities brainstorming workshop surfaced a wide range of mission architecture concepts, contributed and refined by attendees with varying technical backgrounds. Concepts raised included staged multi-vessel approaches combining reconnaissance and scientific sortie phases, tethered dual-vessel configurations intended to generate artificial gravity via centrifugal rotation, automated subsurface drilling for regolith access, and commercial cybersecurity architecture as a requirement underlying multiple other proposed capabilities.

Attendees also weighed these concepts against other priorities raised in the same session, including food storage, closed-loop life support, and crew survivability infrastructure. No single concept was adopted as a final architecture; the session's stated purpose was to generate and prioritize candidate capabilities for further evaluation, not to select a definitive mission design.

The tethered dual-vessel configuration was raised in direct connection to a documented physiological risk in long-duration spaceflight: musculoskeletal and cardiovascular degradation resulting from extended microgravity exposure across an estimated 900-day Mars round-trip. Artificial gravity generation through vessel rotation has appeared in prior NASA mission architecture studies and was discussed at the summit as a concept warranting renewed evaluation against current commercial propulsion capability.

UNRESOLVED TECHNICAL PRIORITIES IDENTIFIED BY WORKING SESSION

A dedicated working session directed attendees to identify, rather than propose solutions for, the most significant unresolved barriers to sustained Martian presence. Three priorities emerged by consensus: surface power generation, given the unreliability of solar infrastructure through extended dust storm cycles and the political and logistical constraints on nuclear deployment; food systems architecture, encompassing caloric sufficiency, crew morale, cultural continuity, and psychological wellbeing across extended isolation; and closed-loop materials systems, given the operational impossibility of Earth-based resupply at required volumes.

A parallel discussion addressed the appropriate scope of artificial intelligence authority in mission-critical decision-making, given that Earth-based intervention is delayed three to twenty-two minutes by radio transmission lag over the Mars communication window. Panelists presented differing positions: one held that AI-driven governance and resource allocation could reduce human bias in high-stakes decisions; the opposing position held that AI over-reliance risks eroding human agency and introducing less visible algorithmic bias, with limited capacity for human correction given the communication delay.

The scope of AI authority in mission-critical decision architecture was presented at the summit not as a resolved question, but as an active point of disagreement among the researchers and engineers directly responsible for these systems.

PROFESSIONAL CONTACTS AND RELATED SESSIONS

Individuals engaged in discussion during the summit included Alli Westover, Project Manager for Bio-Engineering Health and Culinary Science with the NASA HUNCH Group at NASA Johnson Space Center; Dr. Jennifer Fogarty, Associate Professor of Medicine at the University of Central Florida and Chief Scientist for the Consortium for Aerospace and Space Exploration and Environmental Medicine; Michael Nord, PhD, Mission Architect for the Lunar and Martian Program at Firefly Aerospace; and Yahya H. Mirza of Aclectic Systems Inc., who presented a pending NASA Space Act Agreement proposal, Project Blue Plane, concerning immersive digital-twin training environments. A day-one session included a book signing with Dr. Scott Solomon, author of Becoming Martian (facilitated by Dr. Tiffany Vora, President, Explore Mars), addressing the evolutionary and biological questions of multi-generational Martian habitation.

PROPULSION AND HABITAT INFRASTRUCTURE

Sessions addressed current propulsion development across the sector. L3Harris, Lockheed Martin, and Boeing are each pursuing parallel development of chemical, solar electric, nuclear electric, and nuclear thermal propulsion systems, with cryogenic fuel management identified as a shared long-duration storage constraint. Firefly Aerospace, with demonstrated operational lunar landing capability, continues expansion into medium-class launch vehicles for Moon, Mars, and cislunar cargo delivery. On habitat infrastructure, Vast, Axiom, Starlab, and Sierra Space are each in active development of commercial space station modules intended to succeed the International Space Station.

ORGANIZATIONAL CONSIDERATIONS RAISED BY PRESENTERS

Separately from technical content, several presenters raised organizational and workforce considerations relevant to near-term mission timelines. These included an aging aerospace workforce approaching retirement at scale, immigration policy constraints affecting access to global technical talent, and differences between NASA's traditional research-and-test procurement cycle and the commercial sector's iterative development model. Multiple speakers noted the absence of a formal cross-agency, cross-company coordination function capable of aligning agencies, companies, and international partners toward shared mission objectives, though no speaker identified this function as currently funded or established.

Separately, several sessions addressed the shift of major mission components — propulsion, habitat modules, logistics, and communications infrastructure — toward development by competing commercial entities operating on defined production timelines, rather than exclusively within government research programs.

CONCLUSION

H2M2 2026 presented a comprehensive, multi-disciplinary account of the current technical, medical, and organizational state of Mars mission planning. The summit's sessions collectively documented both established engineering progress and a substantial set of unresolved questions — in propulsion, life support, artificial intelligence governance, and workforce capacity — that remain active subjects of ongoing research and debate across the institutions represented.