Episode Summary
Executive Summary: Alan Stern and Michael Shermer discuss the rapid expansion of commercial space, Stern’s suborbital flight experience, New Horizons’ continuing mission, the scientific value of interstellar objects like 3I/ATLAS, and the urgency of preserving NASA’s working spacecraft. Stern argues space exploration drives innovation, inspires STEM, and is becoming increasingly commercial—but warns that proposed budget cuts could abruptly cede U.S. leadership in space.
Main Topics: Commercial space now outweighs government space spending: Stern argues that global commercial space activity has grown far beyond NASA’s budget and now drives much of the innovation, from launch services to satellite constellations and private stations. Personal experience of suborbital spaceflight: Stern describes his Virgin Galactic flight, the launch/reentry profile, the physiological training, and why the experience felt transformative and addictive rather than merely touristic. New Horizons status and scientific legacy: Stern updates the mission’s health, speed, and scientific objectives, emphasizing that New Horizons remains productive in the Kuiper Belt and heliosphere with years of life left. Threats to NASA missions from budget cuts: A major concern is the proposal to shut down dozens of operating spacecraft. Stern argues this would waste prior taxpayer investment and damage U.S. scientific leadership and soft power. Interstellar object 3I/ATLAS and natural explanations for anomalies: Stern explains that interstellar objects are expected products of planetary-system formation and that 3I/ATLAS is scientifically interesting but not evidence of alien technology. UFOs/UAPs, perception, and the need for scientific method: The conversation frames most sightings as optical illusions, balloons, or misidentifications, while acknowledging that systematic observation is needed before drawing conclusions about rare anomalies. Moon, Mars, and STEM inspiration: Stern supports Artemis and lunar infrastructure as a stepping stone to broader exploration, stressing that space inspires children to pursue science and engineering careers.
Key Arguments: Commercial space has become the dominant force in the space economy, both in dollars and in innovation, while NASA remains crucial but relatively small. Suborbital and orbital spaceflight are not just thrilling; they can produce valuable research data and training for future missions. New Horizons remains healthy and scientifically productive, so shutting it down would be a waste of a still-functional national asset. Turning off 55 working spacecraft would be strategically and scientifically disastrous, effectively surrendering leadership to competitors. Interstellar objects like 3I/ATLAS are best understood as natural debris ejected from other planetary systems, not as evidence of alien intelligence. Most UFO/UAP sightings have ordinary explanations; scientific progress requires systematic data collection rather than anecdote. Space exploration matters not only for discovery but as a powerful driver of STEM education, national identity, and long-term economic strength.
Data Points: Worldwide space economy (2023): $600 billion/year - Stern cites a McKinsey analysis of global space expenditures across governments and private industry. NASA budget: About $25 billion/year - Used to show NASA is dwarfed by global commercial space spending. NASA science missions: A little over 90 missions - Stern says this was the approximate number of NASA science missions in development or flight when he ran the directorate. NASA science directorate portfolio: 93 separate flight missions and over 3,000 research grants - Describing the scale of the science mission directorate he managed. New Horizons launch date: January 19, 2006 - Used to highlight the spacecraft’s longevity and speed record. Pluto flyby: 2015 - First close exploration of Pluto by any spacecraft. Kuiper Belt object flyby: 2019 - New Horizons’ first close-up exploration of a Kuiper Belt object. New Horizons speed: 35,000 miles per hour - Stern notes this is about twice the speed of the Space Shuttle. New Horizons travel to lunar orbit after launch: About 9 hours - Illustrates how fast the spacecraft departed Earth compared with Apollo. Apollo lunar travel time: 3 days - Used as contrast with New Horizons’ speed. Suborbital flight altitude: About 300,000 feet / more than 50 miles - Stern’s Virgin Galactic apogee reached above NASA’s astronaut threshold. Virgin Galactic flight duration: About an hour - Total mission time from launch to landing. Commercial zero-G training: Dozens of flights - Stern says he has flown the vomit comet many times for training and research. Interstellar object 3I/ATLAS closest approach to Mars: 29 million kilometers (~20 million miles) - Stern uses this to explain that the object is not close to planets in a spacecraft-like sense. Interstellar objects in planetary systems: Between a billion and a trillion ejected per solar system (estimate) - Stern argues interstellar objects should be common if planetary systems form normally. Number of space agencies worldwide: More than 50 countries - Stern notes many nations now have public space agencies. New Horizons operational lifetime: Potentially to 2050 - He says the spacecraft still has power and fuel for decades. Proposed missions to be turned off: 55 working missions - Stern warns the budget proposal would shut down many functioning spacecraft within about 100 days. Moon distance example: About 100 times farther than the Moon from Earth - His point that 29 million km from Mars is extremely far.
Pivotal Quotes: "commercial space completely dominates not just the dollars, but the innovation" — Alan Stern: On the shift from government-led to industry-led space activity. "Mad as hell and I'm not going to take it anymore." — Alan Stern: His emotional reaction to the proposed shutdown of working NASA spacecraft. "Space exploration enthuses children, gets them hooked on engineering and science." — Alan Stern: On why space is important beyond its direct scientific returns.
Implications: The episode argues that space is entering a commercial, strategic, and cultural inflection point. For listeners, it underscores the importance of defending NASA science, supporting Artemis, and viewing space as a long-term engine of innovation, education, and national leadership.