The Big Book of Mars: Our Obsession with the Red Planet

Episode Summary

Executive Summary: This Planetary Radio episode centered on Mars: the Planetary Society’s policy recommendations to the Biden administration, a conversation with author Mark Hartzman about the cultural history of Mars, and a look at current Mars missions and space news. It also featured Bruce Betts on skywatching, a new STEP grants program, and a trivia segment tying Earth and Mars prime meridians to Sir George Airy.

Main Topics: Planetary Society recommendations to the Biden administration: Casey Dreyer outlines five recommendations: strengthen NASA science, prioritize planetary defense, continue Artemis/Mars plans, treat NASA as an economic and international tool, and support steady 5% annual growth above inflation. The cultural history and obsession with Mars: Mark Hartzman discusses how Mars has been imagined from ancient civilizations through Victorian science, newspaper hoaxes, and classic science fiction, showing why Mars became the dominant planet of popular fascination. Mars fiction and media influence: The conversation explores how works by H.G. Wells, Edgar Rice Burroughs, Ray Bradbury, Kim Stanley Robinson, Orson Welles, and others shaped and were shaped by public ideas about Mars. Current Mars exploration and mission milestones: The episode notes the UAE’s successful Mars arrival, upcoming/ongoing Chinese and NASA Mars missions, and the promise of Perseverance, sample return, and future subsurface exploration. New STEP Grants program: Bruce Betts announces STEP Grants, a public-facing funding program for science and technology projects in planetary science, search for life, and planetary defense. Space trivia, skywatching, and historical context: The sky segment covers Mars in the evening sky, Orion and the winter hexagon, plus a trivia answer about Sir George Biddell Airy and prime meridians on Earth and Mars.

Key Arguments: NASA should be framed as an opportunity for national recovery and innovation, not a problem to solve; it can drive jobs, STEM education, and international partnerships. A science-focused administration should deeply invest in NASA’s science portfolio, including Earth science and broader space science, because each area informs the others. Planetary defense should be elevated through missions like NEO Surveyor, since asteroid impact risk is real and actionable. The current Artemis-to-Mars human exploration direction should remain intact rather than being reset by a new administration. Mars became culturally dominant because it felt plausible as a nearby world for life, so it attracted scientists, writers, and the public in a way Venus did not. Historical newspaper reports and public figures like Tesla, Marconi, Edison, and Lowell helped legitimize Mars speculation, feeding both excitement and misinformation. Science fiction and real science have continually reinforced one another: imagined Mars stories inspired later scientists, while scientific discoveries inspired new fiction. Long-term Mars settlement may be scientifically possible but could be constrained more by politics, social commitment, and unknown biological effects of low gravity than by engineering alone.

Data Points: NASA growth recommendation: 5% per year above inflation - Planetary Society’s proposed funding trajectory for NASA under the Biden administration Historical NASA average growth: ~4% per year since 2014 - Used by Casey Dreyer to compare the proposed 5% growth plan Projected NASA budget: Close to $30 billion by the end of five years - Estimated result of a five-over-five funding path Mars arrival milestone: 5th nation to successfully reach Mars - The United Arab Emirates’ Mars mission achievement Chelyabinsk impact injuries: Over 1,000 people injured - 2013 atmospheric asteroid event referenced by Bruce Betts Chelyabinsk object size: 18 to 20 meters - Estimated size of the asteroid that broke up over Russia Perseverance sample system: 17 motors, 9 drill bits, 43 sample tubes - Random space fact about the rover’s sample caching system Mars opposition year mentioned: 1926 and 1928 - Hugh Mansfield Robinson’s attempts to contact Mars during favorable alignments Lowell Observatory research time: About 1 year - Mark Hartzman’s timeframe for assembling the book Earth/Mars prime meridian reference: Sir George Biddell Airy - Trivia answer linking Earth’s Greenwich meridian and Mars’ Airy Zero Near Shoemaker landing event: 20 years ago this week - Historical note about the asteroid Eros mission

Pivotal Quotes: "NASA doesn't need to be a problem to be solved, but it can be a tool in their arsenal to help the nation." — Casey Dreyer: Explaining the Planetary Society’s approach to the Biden administration "We are obsessed with Mars, and we have been for hundreds, if not thousands, of years." — Mark Hartzman: Opening the discussion of Mars’ long cultural appeal "This is not a place for humans to be. It’s ridiculous to want to go there." — Jim Logan (as quoted by Mark Hartzman): A skeptical view of Mars settlement and habitability

Implications: The episode frames Mars as both a scientific frontier and a cultural mirror. For listeners, it reinforces that exploration policy, public imagination, and mission success are tightly linked—and that Mars exploration will advance through sustained funding, careful planetary defense, and better understanding of the planet’s habitability.