Show notes
The Space Show Presents Dr. Scott Solomon, Sunday, Feb. 8, 2026Quick Summary:The Space Show program focused on Dr. Scott Solomon’s new book “Becoming Martian,” which explores the biological and evolutionary challenges of human space settlement, particularly on Mars. Our discussion covered key concerns about reproduction in space, medical care for astronauts, and the genetic diversity needed for a successful Mars colony. Solomon emphasized that while technology for space travel is advancing rapidly, biological research and medical care capabilities need to develop in parallel to ensure human survival and reproduction in space. The Space Show Wisdom Team discussed various challenges including radiation effects, gravity prescription, and the potential for evolutionary changes in humans and animals living off Earth. Our conversation concluded with thoughts on how space settlement could impact Earth’s ecosystems and the psychological effects of living in space.Detailed Summary:I introduced Dr. Scott Solomon, a biologist and science communicator from Rice University, who discussed his new book, “Becoming Martian,” which explores the potential effects of living in space on the human body and mind. The Space Show Wisdom Team also touched on the topic of gravity prescription and the challenges of having children in space, with Dr. Solomon suggesting that significant changes could occur in as few as 10 generations of space settlers.Scott, an evolutionary biologist, discussed his book “Future Humans” which explores scenarios for human evolution, including the possibility of people adapting to life in space settlements. He explained his research process, which involved studying how space conditions affect the human body, particularly focusing on Mars as a potential first destination for long-term human settlement. Scott emphasized his approach of not only presenting known facts but also describing the scientific process and the people involved in space exploration.Scott discussed the potential impacts of living in space, using Mars as an example, and highlighted the lack of data on how partial gravity affects the human body. He emphasized that factors such as the founder effect and evolutionary changes would be relevant regardless of the location, whether on Mars, the Moon, or a space station. Scott also proposed conducting experiments using bacteria as a proxy to study evolutionary changes in space, predicting that evolution might proceed faster in space due to higher radiation exposure.David and Scott discussed the potential for conducting non-profit driven scientific research on commercial space stations, emphasizing the importance of understanding the biological and psychological impacts of living in space for long-term human habitation. Scott highlighted the need for more research on human reproduction in space, citing a Dutch company’s efforts to study this using in vitro fertilization technology that can simulate different gravitational environments. They also discussed the rapid advancement of technology for space travel but agreed that biological and ethical considerations need to be addressed before long-term human settlements on Mars can be considered viable.Our team discussed ethical considerations of bringing children into extreme environments, particularly focusing on Mars. Scott explained that while Earth has challenging situations, Mars presents unique risks including potential health issues from lower gravity and limited microbial exposure. Marshall raised questions about genetic changes in animals brought to space, referencing historical dog breeding as an example. The discussion concluded with Scott suggesting that minimizing infectious diseases could be achieved by avoiding mammals and birds in space colonization efforts, as many human diseases originate from animal spillovers.We also discussed potential animals to bring on a space mission, with Scott advocating for insects over mammals and birds due to their resource efficiency and lower risk of infectious disease transmission. Marshall suggested a mix of goats, chickens, mealworms, and fish, while David expressed concerns about the cultural acceptance of insect-based diets among potential space tourists. Scott shared his experience with insect-based cuisine, including Mexican ant larvae, and explained the nutritional benefits of insects compared to other animal proteins. The discussion touched on the potential effects of an insect diet on human reproduction and microbiome, with Scott noting that a vegan diet might be most energy-efficient for space settlements.Scott discussed the challenges of sending humans to Mars, including the need for a stable food supply for a two-and-a-half-year-round trip. He expressed interest in participating in a Mars mission but emphasized the importance of ensuring a safe return. John Jossy raised concerns about reproduction in space, highlighting the need for mammalian reproduction experiments in variable gravity environments. Scott acknowledged this issue in his book and mentioned ongoing rodent embryo studies by Spaceborne United as a first step in addressing these challenges.Our guest outlined the steps needed to make space settlement a reality by 2026, emphasizing the need for parallel research in technology, biology, and ethics. He highlighted the importance of studying reproduction in space, exploring genetic modifications, and understanding ethical challenges. Dr. Solomon noted that current investments in space life sciences research are insufficient and called for increased funding, both in the U.S. and through international collaboration. John Hunt asked about the potential impact of humans visiting exoplanets with Earth-like biospheres, to which Scott replied that he had explored such scenarios in a recent astrobiology class, emphasizing the importance of understanding the ecological impacts of human visits.The group discussed the challenges of human reproduction and medical care in space environments, focusing on the potential risks and unknowns of extraterrestrial life support systems and ecological interactions. Solomon emphasized the importance of applying Earth-based ecological knowledge to predict and prepare for space environments, while Marshall highlighted the complexity of allergies and the vast number of potential allergens in new environments. John Jossy noted that NASA’s current priorities do not include reproduction or variable gravity research, and David raised concerns about the advancement of medical care for long-duration space missions. Doug Plata suggested that medical needs should be anticipated and planned for in the different phases of space settlement, advocating for accelerated animal studies to address reproduction before 2055.As a group and with our guest, we discussed the importance of genetic diversity and a large starting population for a successful human settlement beyond Earth, emphasizing the need for a genetically diverse population even if it’s smaller. Doug and Marshall raised questions about the feasibility of selecting specific traits in the starting population, with Marshall suggesting that smaller, subsistence-based individuals might be advantageous. They also discussed the potential for evolutionary changes in isolated populations, with Solomon highlighting the role of gene flow between Earth and Mars. David asked about public interest in human spaceflight, to which Scott responded that interest varies but that space exploration can inspire a sense of interconnectedness and environmental stewardship.Scott continued discussing his book “Becoming Martian,” which explores the challenges of rebuilding civilization in space, including the basics like toilet paper and pencils, as well as the need to understand and potentially rebuild Earth’s ecosystems. Doug raised questions about the role of ecology in space settlements, suggesting that complex biospheres might not be necessary and that agriculture could be simplified. Our guest agreed that agriculture could be simplified but emphasized the importance of ecological interactions, even in space. The group discussed the potential of using ant and termite nest structures as inspiration for designing habitats on Mars. They also touched on the concept of paraterraforming Mars, with Doug suggesting that it could be a quick way to produce Earth-like air using local resources.Special thanks to our sponsors:American Institute of Aeronautics and Astronautics, Helix Space in Luxembourg, Celestis Memorial Spaceflights, Astrox Corporation, Dr. Haym Benaroya of Rutgers University, The Space Settlement Progress Blog by John Jossy, The Atlantis Project, and Artless EntertainmentOur Toll Free Line for Live Broadcasts: 1-866-687-7223 (Not in service at this time)For real time program participation, email Dr. Space at: [email protected] for instructions and access.The Space Show is a non-profit 501C3 through its parent, One Giant Leap Foundation, Inc. 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