Thomas Gangale (born 13 May 1954) is an American aerospace engineer, political scientist, space jurist, space historian, author, and researcher known for his contributions to the conceptualization of a calendar for Mars (the Darian calendar), international space law, proposals for reforming the U.S. presidential nomination process, studies on human Mars mission and communication architectures, human spaceflight scheduling, Martian geography projects, and related interdisciplinary topics.

Thomas Gangale
Thomas Gangale
Born	(1954-05-13)May 13, 1954 San Francisco, California
Occupations	aerospace engineer, political scientist, space jurist
Known for	Solar quasi-satellite for Mars communications, alliance theory, Darian calendar

Thomas Gangale was born on May 13, 1954 in San Francisco, California. He graduated from George Washington High School in 1972. He attended the College of San Mateo from 1972 to 1974 before enlisting in the United States Air Force, where he served as an air traffic controller at England Air Force Base in Alexandria, Louisiana. He separated from active duty in 1975 to attend the University of Southern California (USC), earning a Bachelor of Science degree in aerospace engineering from the University of Southern California (USC).^[1]

Upon graduation from USC, Gangale declined an offer to join the Jet Propulsion Laboratory's Voyager mission control team due to his prior commitment to active duty service in the United States Air Force. During his military career (1970s–1990), he served as a commissioned officer in roles including F-4 Phantom weapon systems officer and historian for the 56th Tactical Fighter Wing. While stationed at Lockheed Missiles and Space Company in Sunnyvale, California (1981--1987), he managed technical and contractual aspects of reconnaissance satellite systems (such as Gambit and Hexagon) and payloads for Space Shuttle missions STS-4 and STS-39. Later, he was assigned to the Boost Surveillance and Tracking System program office at Los Angeles Air Force Base.

After leaving the Air Force in 1990, he worked for several small companies in the San Francisco Bay Area as a systems analyst. He earned a Master of Arts degree in international relations from San Francisco State University in 2006, with a thesis on “International Legal Issues of Sovereignty and Property Rights in Outer Space.”^[1]

Gangale completed a Doctor of Juridical Sciences (JSD or SJD) degree in space, cyber, and telecommunications law at the University of Nebraska College of Law (University of Nebraska–Lincoln) in 2017. His dissertation addressed “The Definition and Delimitation of Outer Space and Territorial Airspace in International Law.”^[1] Gangale's opinion editorials have appeared in the Philadelphia Inquirer,^[2] San Francisco Chronicle,^[3][4][5] San Francisco Examiner,^[6] and Marin Independent Journal.^[7] He has presented at conferences including those of the American Institute of Aeronautics and Astronautics (AIAA) and the Society of Automotive Engineers (SAE), and has appeared in media discussions on space and political topics. Gangale is a member of the AIAA. Many of his works were coauthored with Marilyn Dudley-Rowley.

Gangale developed the Darian calendar in 1985, a proposed calendar system for Mars named after his son Darius. First published in 1986, it divides the Martian solar day (sol) and year into weeks and months adapted to Mars's orbital period of approximately 687 Earth days (668.59 sols per vernal equinox year). Key features include 24 months (mostly 28 sols, with periodic 27-sol months for synchronization), a nominal seven-sol week (with six-sol weeks at month ends to align starts), leap year rules, and intercalation formulas to maintain alignment with the vernal equinox over millennia as the Martian year lengthens slightly.

The calendar's epoch is the Telescopic Epoch, originally proposed by others and adopted by Gangale in 2002, set to the Martian vernal equinox corresponding to March 11, 1609 (Earth Gregorian). This recognizes Johannes Kepler's publication of his first two laws of planetary motion (using Tycho Brahe's Mars observations) and Galileo Galilei's first telescopic observations of Mars in 1609–1610, marking the start of the telescopic era in Mars study. This epoch allows all historical telescopic observations of Mars to be expressed in non-negative Darian dates. Earlier versions used a 1975–1976 epoch tied to the Viking program's successful Mars landings. The calendar has been presented at Mars Society conventions (e.g., 1998 founding) and discussed in contexts of future Mars colonization, with adaptations (e.g., for Galilean moons of Jupiter in 1998) and cultural expansions (including East Asian variants).

Gangale drew the first computer-aided design drawings for the Flashline Mars Arctic Research Station, a Mars Society project on Devon Island in the Canadian Arctic that served as a prototype for human Mars exploration habitats. He has contributed to concepts for assured communication with Mars, including the MarsSat quasi-satellite architecture for continuous relay links. This design overcomes line-of-sight limitations caused by Mars' orbital geometry and solar conjunctions, when the Sun blocks direct radio communication between Earth and Mars for up to several weeks.

Gangale has also published on modifications to NASA's Mars Design Reference Architecture, including payload trades and options for early crew return. In addition, he has developed "time maps" of human spaceflight—two-dimensional visualizations that extend traditional Gantt charts by incorporating historical and projected timelines. These maps illustrate schedule evolution, credibility, and slippages across programs such as Mercury, Gemini, Apollo, Dyna-Soar, and Manned Orbiting Laboratory, with detailed examples covering periods such as 1956–1967 that reveal broader trends in project management and planning dynamics.

Gangale's MarsSat concept directly addresses a critical psychosocial risk in conjunction-class human missions to Mars. During the midpoint of such missions—roughly the "third quarter" phase identified in research by Marilyn Dudley-Rowley—the crew experiences heightened stress, deviant behavior, and morale decline precisely when solar conjunction severs direct Earth contact for several weeks. By placing relay spacecraft in quasi-satellite solar orbits (co-periodic with Mars but slightly inclined and eccentric), MarsSat maintains continuous line-of-sight communications between Mars and Earth. This provides an unbroken emotional tether to mission control and family, preventing the communication blackout from exacerbating the Third Quarter Phenomenon and thereby enhancing crew health, safety, and performance during the most psychologically fraught segment of the journey.

Gangale's broader Mars mission architecture further improves efficiency by taking maximum advantage of the 15- to 17-year meta-synodic cycle of Earth-Mars alignments. This long-term periodicity allows selection of optimal launch windows that minimize energy requirements for interplanetary transfers. By aligning trajectories with these recurring favorable geometries, the design achieves significant reductions in initial mass in low Earth orbit (IMLEO) compared to standard opposition- or conjunction-class profiles. The approach incorporates payload trades and early-return options, yielding lighter overall mission stacks, lower propellant demands, and greater flexibility for crewed expeditions while remaining compatible with existing launch vehicles and in-situ resource utilization strategies.

Gangale has contributed to international space law through analyses of orbital regimes, property rights, and governance frameworks for extraterrestrial activities. In his 2006 article "Who Owns the Geostationary Orbit?", published in the Annals of Air and Space Law (Vol. 31), he critiques claims of national sovereignty over segments of the geostationary orbit (GSO) advanced in the 1976 Bogotá Declaration by equatorial states. Drawing on astrodynamics, analogies to terrestrial sovereignty claims, customary international law, and the language of the 1967 Outer Space Treaty, Gangale argues that the GSO forms part of outer space and is not subject to national appropriation. The paper refutes the Bogotá Declaration's assertion that the GSO is a distinct natural resource outside outer space, emphasizing that no treaty or UN resolution distinguishes the GSO from other orbits. This work has been referenced in subsequent scholarship on orbital governance and the legal status of geosynchronous positions.^{[8][9][10][11]}

Gangale's work in space law critiques established concepts and advocates for frameworks supporting space activities. In "The Non Kármán Line: An Urban Legend of the Space Age" (Journal of Space Law, 2015/2016), he debunks the Kármán line—a notional boundary at approximately 100 km altitude often cited as the edge of space—as lacking scientific or legal basis, arguing it is an urban legend perpetuated without formal adoption in international law.^{[12][13][14][15][16][17][18]} This article, drawn from his doctoral research, challenges the arbitrary delimitation of outer space and territorial airspace, proposing alternative approaches based on functional, spatial, temporal, and hybrid criteria.

On extraterrestrial resource utilization, Gangale defends the legality of mining on the Moon and asteroids for profit under existing treaties. In "The Legality of Mining Celestial Bodies" (Journal of Space Law, Vol. 40, No. 1-2, 2017), he argues there is no moratorium on mining celestial bodies in international law, tracing historical statements and treaty interpretations to support commercial exploitation without national appropriation. He posits that the 1963 Outer Space Treaty allows resource use, including profitable extraction.^[19][20][21] In publications such as "Myths of the Moon Agreement" (2008)^[22] and his book The Development of Outer Space: Sovereignty and Property Rights in International Space Law (2009), he argues for reviving the 1979 Moon Agreement to establish regulated regimes for resource exploitation, countering claims that it prohibits commercial mining.^{[23][24][25][26][27][28]} He critiques opposition to the Moon Agreement as rooted in misconceptions. Additional works like "Castles in the Air: Debunking the Space Settlement Prize" (2008) and "A Limited International Agreement on Property Rights" (2007) explore property rights models that enable commercial activities while preserving common heritage principles.

Gangale has initiated comprehensive projects on Martian nomenclature and mapping. The Encyclopedia of Martian Geography is a detailed reference (over 1,100 pages) reviving and cataloging classical albedo features—historical names for Martian surface regions observed telescopically before spacecraft imagery—alongside modern IAU-approved toponyms. It integrates historical, cultural, and scientific contexts for Martian place names, aiming to preserve astronomical heritage while supporting future exploration.

Complementing this is the Atlas of Martian Geography, a high-resolution visual companion providing maps, imagery, and annotations of Martian features. Both projects, developed to bridge classical and contemporary Martian studies, were set for digital launch in early 2026, with initial elements uploaded to platforms like ResearchGate, Academia.edu, and Zenodo. They draw on Gangale's prior work in Martian timekeeping and astrosociology, emphasizing cultural and practical aspects for potential human settlement.

Gangale authored the American Plan (the name adopted by FairVote,^[29] but formally known as the Graduated Random Presidential Primary System), a proposal to reform the U.S. presidential nomination process by addressing front-loading in primaries. It features a semi-randomized schedule starting with smaller states to promote merit-based early competition and broader candidate participation. The plan has received support from the California Democratic Party^[30] and recommendations for consideration by the Democratic National Committee.^[31] He has written on this in From the Primaries to the Polls: How to Repair America's Broken Presidential Nomination Process (2007).^{[32][33][34][35][36][37]}

Gangale has also contributed to realist theories of alliance formation. In his 2003 paper "Alliance Theory: Balancing, Bandwagoning, and Détente" (San Francisco State University), he analyzes Stephen M. Walt's balance-of-threat theory, distinguishing it from Kenneth Waltz's balance-of-power and contrasting it with Randall Schweller's balance-of-interests approach. The work clarifies behavioral distinctions, particularly between bandwagoning (asymmetrical, often coerced alignment) and détente (mutual, voluntary tension reduction). It has been referenced in studies on Persian Gulf alliances, NATO evolution, and threat perception in regional conflicts.^{[38][39][40][41][42][43][44][45][46]}

• Gangale, Thomas (2026). Encyclopedia of Martian Geography, Volume 1. Self-published (via ResearchGate/Zenodo). Retrieved March 1, 2026.

• Gangale, Thomas (2019). Space Exploration in the United States: A Documentary History. Bloomsbury Publishing USA. ISBN 978-1-4408-7165-8.

• Gangale, Thomas (2017). "The Non Kármán Line: An Urban Legend of the Space Age" (PDF). Journal of Space Law. 41 (2): 151–177.

• Gangale, Thomas (2018). How High the Sky?: The Definition and Delimitation of Outer Space and Territorial Airspace in International Law. Leiden, The Netherlands: Brill Nijhoff.

• Gangale, Thomas (2018). "Mars Design Reference Architecture Modifications: Payload Trades and Early Return Options". Proceedings of the AIAA Space 2018 Conference. Orlando, Florida: American Institute of Aeronautics and Astronautics.

• Gangale, Thomas (2018). Time Maps of Human Spaceflight: 1962-1964. AIAA SPACE and Astronautics Forum (SPACE 2018). Orlando, Florida: American Institute of Aeronautics and Astronautics.

• Gangale, Thomas (2018). Time Maps of Human Spaceflight: 1965-1967. AIAA SPACE and Astronautics Forum (SPACE 2018). Orlando, Florida: American Institute of Aeronautics and Astronautics.

• Gangale, Thomas (2017). "The Legality of Mining Celestial Bodies". Journal of Space Law. 40 (1–2): 187.

• Gangale, Thomas (2009). The Development of Outer Space: Sovereignty and Property Rights in International Space Law. Bloomsbury Publishing USA. ISBN 978-0-313-37824-9.

• Gangale, Thomas (2009). Time Maps of Human Spaceflight: 1956-1958. AIAA SPACE 2009 Conference & Exposition. San Diego, California: American Institute of Aeronautics and Astronautics. doi:10.2514/6.2009-6411.

• Gangale, Thomas (2009). Time Maps of Human Spaceflight: 1959-1961. AIAA SPACE 2009 Conference & Exposition. San Diego, California: American Institute of Aeronautics and Astronautics. doi:10.2514/6.2009-6412.

• Gangale, Thomas (2008). Myths of the Moon Agreement. AIAA SPACE 2008 Conference and Exposition. San Diego, California. doi:10.2514/6.2008-7715.

• Gangale, Thomas (2008). Castles in the Air: Debunking the Space Settlement Prize. 46th AIAA Aerospace Sciences Meeting and Exhibit. Reno, Nevada. doi:10.2514/6.2008-1466.

• Byford, Dorrie; Goppert, James; Gangale, Thomas (2008). "Optimal Location of Relay Satellites for Continuous Communication with Mars". Proceedings of the AIAA Space 2008 Conference. San Diego, California: American Institute of Aeronautics and Astronautics.

• Gangale, Thomas (2007). From the Primaries to the Polls: How to Repair America's Broken Presidential Nomination Process. Bloomsbury Publishing USA. ISBN 978-0-313-34836-5.

• Gangale, Thomas (2007). A Limited International Agreement on Property Rights. AIAA SPACE 2007 Conference & Exposition. Long Beach, California. doi:10.2514/6.2007-6072.

• Gangale, Thomas (2007). The Architecture of Time, Part 3: Project Management in Two-Dimensional Time. AIAA SPACE 2007 Conference & Exposition. Long Beach, California: American Institute of Aeronautics and Astronautics. doi:10.2514/6.2007-6073.

• Gangale, Thomas (2006). The Architecture of Time, Part 2: The Darian System for Mars. San Diego, California: Society of Automotive Engineers.

• Gangale, Thomas (2006). "Who Owns the Geostationary Orbit?" (PDF). Annals of Air and Space Law. 31.

• Gangale, T. (2005). "MarsSat: Assured Communication with Mars". Annals of the New York Academy of Sciences. 1065: 296–310. doi:10.1196/annals.1370.007.

• Gangale, Thomas (2003). "Alliance Theory: Balancing, Bandwagoning, and Détente" (Term paper / Unpublished manuscript). San Francisco State University, International Relations 720.

• Gangale, Thomas; Dudley-Rowley, Marilyn (2003). "The Architecture of Time: Design Implications for Extended Space Missions". SAE Transactions: Journal of Aerospace (2004). 113: 1219–1231.