2023 NASA Innovative Advanced Concepts Symposium: Part 1

Episode Summary

Executive Summary: This Planetary Radio episode spotlights NIAC’s future-facing concepts: bio-built Mars habitats, a Titan airplane that samples rain and aerosols, a self-assembling lunar radio telescope array for cosmic dark ages science, and a fluidic space telescope for ultra-large apertures. The episode frames NIAC as a place where high-risk, potentially transformative ideas are explored, tested, and sometimes turned into real future mission technologies.

Main Topics: NIAC and the value of visionary space technology (Priority: 5/5): Sarah Alachman introduces the NASA Innovative Advanced Concepts Symposium as a venue for nurturing unconventional ideas that may transform exploration, with projects moving through phased study awards and heavy emphasis on creativity and testing. Biological construction for Mars habitats (Priority: 5/5): Kongrui Jin describes using cyanobacteria and fungi to produce biominerals that bind Martian regolith into brick-like building blocks, enabling habitats, furniture, and potentially self-healing or self-growing structures on Mars and elsewhere. Titan airplane that samples clouds and lakes (Priority: 4/5): Quinn Morley presents a Titan aircraft concept that uses capillary action through the aircraft skin to collect atmospheric liquids and aerosols, targeting Titan’s wet regions and complementing Dragonfly by enabling science in rainy, lake-rich environments. Lunar far-side radio telescope built from local resources (Priority: 5/5): Ronald Polidan explains a massive Far View Observatory concept that would mine lunar regolith for aluminum, silicon, oxygen, and power systems, then robotically assemble a 100,000-dipole array to study the cosmic dark ages and other low-frequency phenomena. Fluidic telescope for giant optical apertures (Priority: 5/5): Edward Valaband outlines FLUTE, a liquid mirror telescope concept using gallium alloys or ionic liquids to create large, smooth optical surfaces in space, potentially enabling cheaper, larger telescopes for exoplanet spectroscopy and even surface-feature imaging. Bruce Betts’ “What’s Up” and technology perspective (Priority: 3/5): Bruce Betts connects the episode to broader advances in miniaturization and computers, notes the challenge of science communication and creativity, and shares a space fact about the first spacecraft-discovered moon.

Key Arguments: High-risk, high-reward programs like NIAC are essential because they explore technologies too early or unconventional for standard mission development. Biological systems can be used as construction tools on Mars by turning local regolith into durable materials, reducing the need to launch expensive mass from Earth. Titan’s atmosphere and liquids create opportunities for science that traditional landers or aircraft would avoid, and a permeable-skin aircraft could sample these environments directly. A far-side lunar telescope can escape Earth radio noise and ionospheric blockage, making extremely low-frequency astronomy possible. Using lunar in-situ resource utilization could make a telescope self-sustaining, repairable, and scalable over decades. Liquid-mirror telescopes may overcome launch-volume limits and segmentation complexity, enabling much larger apertures at lower cost than traditional space telescopes. The main barriers to these concepts are engineering, environmental stability, and systems integration, not the core scientific ideas themselves.

Data Points: NIAC symposium dates: September 19–21, 2023 - The Houston symposium where the interviews were recorded OSIRIS-REx sample return date: Sunday, September 24, 2023 - Sarah notes the Bennu samples returned to Earth just before the NIAC coverage NIAC Phase 1 duration: 9 months - Projects get nine months to mature an idea before potentially advancing NIAC Phase 2 and 3 duration: 2 years each - Later phases allow deeper exploration of the concept Titan aircraft length: 18 meters - Quinn Morley says the concept is about the size of a PBY Catalina Titan aircraft wingspan: 25 meters - Designed to fit in Starship and support flight in Titan’s dense atmosphere Titan aircraft fuselage: 3 meters - Aircraft geometry described during the concept discussion Far View telescope area: 225 square kilometers - Ronald Polidan compares the array size to the city of Houston Far View telescope dipoles: 100,000 - Baseline design target for the lunar far-side array Far View science minimum: 50,000 dipoles - Simulations suggest this is the minimum for cosmic dark ages science Observed surface roughness: 5 nanometers - Initial lab measurement of solidified components under digital holography microscope Improved surface roughness: below 1 nanometer - Measured with atomic force microscopy after further analysis Exoplanets discovered: over 5,500 - Sarah and Edward discuss how many exoplanets have been found so far Nearest-systems resolution target: about 1.5 kilometers aperture - Estimate for resolving continent-size features on exoplanets about four light-years away Cost estimate for 50-meter telescope: an order of magnitude lower than JWST - Edward says current architecture studies suggest lower cost than James Webb LightSail 2 mission duration: more than 3 years - Bill Nye notes the spacecraft operated from June 2019 to November 2022 LightSail 2 launch/retirement window: June 2019 to November 2022 - Referenced in the fundraising segment

Pivotal Quotes: "The main premise of this is that dreams are the beginning of what takes us out there, what allows us to innovate and then go out into space." — Sarah Alachman: Introductory framing for the NIAC symposium and the episode’s theme "We use cyanobacteria and fungi to make them produce biominerals, which is calcium carbonate, which function as glue to bind soil particles on Mars together to make building blocks." — Kongrui Jin: Explaining the Mars habitat construction concept "Our concept is based on using liquids to form the optical surface in space." — Edward Valaband: Describing the core idea behind the fluidic telescope concept

Implications: The episode highlights a pipeline from speculative concept to future mission capability: biological construction, autonomous lunar manufacturing, and giant telescopes could reshape exploration, astronomy, and off-world infrastructure if these early-stage technologies mature.