Show notes
The Space Show Presents BRYCE MEYER, Tuesday, Dec. 9, 2025Quick SummaryWe initially focused on our Space Show program featuring Bryce Meyer discussing his upcoming book on space agriculture, which explores technologies and principles for growing food in space environments. The discussion covered various challenges of space farming, including plant adaptation, soil biomes, and the need for further research on growing crops to maturity in microgravity conditions. The conversation concluded with an examination of agricultural techniques for space colonization, including the use of bioreactors, mushrooms, and various animals for food production, while emphasizing the importance of certifying existing technology and addressing biological questions related to plants in different gravity regimes.Detailed SummaryDavid hosted a Space Show program featuring Bryce Meyer, who discussed his new book “Designing Farms in Space” scheduled for release on January 2nd by Springer Publishing. The book aims to provide a comprehensive guide on technologies and principles for space agriculture, covering topics from biochemistry to farm system calculations. David announced upcoming programs for the month, including guests Manuel Cuba, Isaac Arthur, and Michael Lissner, and reminded listeners of their annual fundraising campaign. Former NASA Administrator Dr. Mike Griffin with be with us Tuesday evening, Dec. 23.Bryce and David discussed the challenges and unknowns of growing plants in space, emphasizing the need to adapt Earth technologies while accounting for microgravity, different gravitational forces, and radiation. Bryce highlighted the lack of data on growing crops to maturity in space and the need for experiments to understand plant responses in these environments. They also touched on the potential impact of the space environment on plants, including chemical emissions from the structure and unknown factors like the moon’s magnetic field. David humorously asked about plant consciousness, but Bryce focused on the practical challenges and the importance of further research.Marshall and Bryce discussed the adaptability of plants and the importance of a living soil biome for crop productivity. Bryce explained that while plants are highly adaptive, certain crop strains are specifically optimized for certain conditions. They explored the concept of transforming simulated lunar soil into a living soil biome, with Bryce mentioning research by Adam Williams on using red worms and manure to achieve this. Bryce also described the spectrum of growing methods from aeroponics to soil-based systems, highlighting the benefits of a full soil biome for plant resilience and nutrient availability.Bryce discussed the development of space farming and agriculture, noting that while significant progress has been made, such as China’s 360-day closed-loop system with a crew of eight, there are still challenges. He suggested that dietary diversity and the inclusion of animals in the system could improve outcomes, as monotony and inadequate nutrition could lead to weight loss and decreased productivity. John Jossy and David explored the possibility of cultured meat in space, with Bryce warning about the risks of contamination in bioreactors, while suggesting tofu and other resilient crops as viable alternatives.Bryce continued discussing various animals and plants suitable for space agriculture, including chickens, goats, mealworms, and plants for pharmaceuticals. He explained the challenges of shipping animals, particularly mammals, due to their sensitivity during long space journeys. Bryce also highlighted the existing market for vertical farming technologies, which could be adapted for space agriculture, and mentioned the need to test these technologies in different gravity conditions.Our guest talked with us about the evolutionary model for Space Farms and emphasized the importance of adapting agricultural solutions to different settlement types. He noted that while China is ahead in some areas, the U.S. has made significant advancements in bioreactor technology. Bryce outlined a sequence for growing food on Mars, starting with salad greens, followed by high-value crops like peanuts and soybeans, and eventually tree crops like citrus. He also suggested growing strawberries and melons, as well as using aquaponics to cultivate shrimp for protein. The Wisdom Team discussed the potential of using crickets for protein, but Bryce suggested focusing on shrimp instead due to the “ick factor” that could deter settlers.The group discussed the challenges of growing food for children in space, focusing on nutritional needs and the impact of gravity on plant growth. Bryce explained that children require a more diverse amino acid profile and different fat content than adults, suggesting the need for animal or yeast-developed crops. They also touched on the importance of controlling environmental factors like light and CO2 levels for optimal plant growth. The conversation concluded with a discussion on the potential use of LED lights and the need for different growing strategies depending on the location, such as using lava tubes on the Moon or natural sunlight on Mars.Bryce mentioned different agricultural regimes for rotating habitats and the importance of energy calculations in determining the type of lighting used. He explained the processing steps needed to convert raw crops into edible foods, including the use of storage tanks and various storage mechanisms like vacuum packing. Our guest highlighted the role of spices in space agriculture and the challenges of growing certain spices like cinnamon. David inquired about the viability of Mars One’s agricultural plan, and Bryce suggested that AI and augmented reality could be used to assist with maintenance and troubleshooting in space habitats without the need for excessive volunteers and labor.The Mars One topic led to a discussion about the labor requirements for farming, noting that while some tasks could be robotically assisted, people would likely be eager to participate in gardening activities. He shared personal anecdotes about his grandmother’s farm management and suggested that future farms would need designated farm bosses to oversee operations. Marshall inquired about the maximum population density for efficient space farming, to which Bryce responded that current Earth-based farming supports 8 people per acre, while vertical farming could potentially accommodate 20 people per hectare. The conversation concluded with a discussion about the benefits of mushrooms in farming, particularly their ability to break down lignin in plant waste and their role in managing CO2 and oxygen cycles in closed-loop systems.Bryce continued by talking about agricultural techniques for space colonization, including the use of bioreactors, mushrooms, and various animals for food production. He explained the progression of animal farming in space, starting with birds and rabbits before moving to larger mammals like cows. Bryce also covered the potential use of genetically modified bacteria and lab-grown meat as backup food sources. The discussion touched on the practicality of these methods in space habitats like O’Neill colonies and long-duration space vehicles, considering factors such as radiation, contamination risks, and the efficiency of current agricultural technologies compared to those in the 1970s and 1980s.The challenges and benefits of rotating habitats for plant growth in space, emphasizing that they might be better than growing in lower gravity environments was one of our later topics. Phil inquired about the feasibility of a large-scale, long-duration experiment like Biosphere 2, to which Bryce responded that similar experiments have already been conducted by China and that a larger, more diverse structure like Biosphere 2 would be beneficial. The team touched on the potential ethical concerns surrounding the manipulation of life in space, including animal rights and dietary restrictions based on religious beliefs. Bryce suggested that vegetarian or vegan diets might be more feasible in the early stages of space settlement, as it could take several years to establish a self-sustaining food supply on Mars.Bryce concluded by talking about the need for further studies on space agriculture, emphasizing the importance of certifying existing technology in space and addressing biological questions related to plants in different gravity regimes. He highlighted the potential for large-scale plant testing in rotating settlements or on the moon within the next five to six years, as China is already planning to send plants to the moon. Bryce expressed hope that SpaceX and other experts would collaborate on these efforts, noting that the technology needed is already available. The discussion concluded with a reflection on ethical considerations in food production and consumption.Special thanks to our sponsors:Northrup Grumman, 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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