Author David Brin Considers and Writes "Existence"

Episode Summary

Executive Summary: This Planetary Radio episode combines a fast-moving update on September’s planetary missions, a call to defend NASA planetary science funding, and an extended interview with David Brin about his novel Existence. Brin argues that near-future humanity may survive a dangerous “minefield” of social and technological challenges and encounter alien artifacts more plausibly than interstellar travelers. The show ends with skywatching, space-history trivia, and listener Q&A.

Main Topics: September solar system mission roundup: Emily Lakdawalla reviews current mission activity: Curiosity heading to Glenelg, Opportunity exploring Endeavour Crater, Dawn departing Vesta for Ceres, GRAIL’s low lunar mapping, MESSENGER’s mission extension, and Juno’s major trajectory correction. Call to support planetary science funding: Bill Nye urges listeners to visit the Planetary Society site and support restoration of planetary science funding through the administration, emphasizing that Mars landings and future exploration depend on sustained investment. David Brin on Existence and near-future humanity: Brin explains that his novel portrays a plausible 2048–2050 future shaped by climate, AI, oligarchy, social change, and space exploration, rather than utopia or apocalypse. First contact without interstellar travel: Brin describes a more plausible alien-contact model based on long-lived probes and “message in a bottle” crystals rather than starships, allowing intelligence to emerge and be influenced across millions of years. Expanded definitions of humanity: Brin discusses how fear levels and social inclusion widen the circle of who counts as ‘us,’ extending from humans to uplifted animals, artificial intelligences, and future generations. Bruce Betts’s skywatching, history, and trivia: Betts covers the evening and pre-dawn sky, space-history anniversaries, Dawn’s milestone, and a Curiosity arm trivia contest, then introduces the next quiz question. Listener engagement and public science culture: The episode highlights community participation through trivia, crowdfunding for Uwingu, and a Lego Curiosity model submitted through Cuusoo, reinforcing the show’s participatory science ethos.

Key Arguments: Planetary exploration is inexpensive relative to its scientific return, but requires continued public and administrative support to avoid losing capabilities such as Mars landing expertise. Near-future science fiction is most compelling when it reflects real social tensions and incremental advances rather than either total collapse or fully solved problems. A plausible first-contact scenario may involve durable artifacts or probes that persist for eons, not necessarily direct interstellar travel. If humanity successfully navigates the 21st-century “minefield,” it may become the first civilization in the galaxy to do so. Lower fear levels expand moral and social inclusion, a pattern Brin connects to civil rights, uplifted animals, and AI. Space exploration and scientific discovery are presented as shared public goods that inspire participation, education, and long-term civilization building.

Data Points: Curiosity rover target: Glenelg - Emily Lakdawalla says Curiosity has started roving toward its first rock destination. Opportunity location: Endeavour Crater - Opportunity is crawling down the inside edge of Endeavour Crater. Dawn departure: Vesta to Ceres - Dawn has left Vesta and is headed to Ceres. Dawn cruise time to Ceres: About 3 years - Emily says the journey from Vesta to Ceres will take roughly three years. GRAIL orbit altitude: Tens of thousands of meters above lunar peaks - GRAIL is mapping the Moon from a very low orbit. Juno Jupiter arrival: July 2016 - Emily notes Juno will arrive at Jupiter in July 2016. Lego Curiosity size: About 300 pieces - Emily describes a proposed Lego Curiosity model on Cuusoo. Planetary science funding appeal deadline: Urgent / soon - Bill Nye stresses action is time-sensitive and tied to the administration’s budget decisions. Novel setting: 2048–2050 - Brin places much of Existence in a near-future timeframe. First-contact crystal/probe scale: Can wait a million, 10 million, or 100 million years - Brin explains how long-lived probes could persist until intelligent life evolves. Voyager 1 launch anniversary: 35 years - Bruce Betts mentions the 35th anniversary of Voyager 1’s launch. Voyager 2 launch timing: About 2 weeks before Voyager 1 - Betts notes Voyager 2 launched first, despite Voyager 1 receiving the higher-number designation. Curiosity arm reach: 2.1–2.2 meters - Listener answers for the Curiosity rover arm reach. Alternate measured arm reach: 1.45 meters - One listener calculates the working reach from the rover body rather than the full arm length. Trivia winner country: Republic of Belarus - Winning listener Artur Anikiech is from the Minsk region. Trivia deadline: Monday, September 10 at 2 p.m. Pacific - Deadline for the next listener contest entry.

Pivotal Quotes: "If we cross the minefield successfully, The scary thing is, we might be the first in the galaxy to do so." — David Brin: Brin summarizes the novel’s central idea about civilization surviving existential threats and possibly being first in the galaxy. "What we would like you all to consider doing is visit planetary.org and look the situation over." — Bill Nye: Nye asks listeners to support restored planetary science funding through the Planetary Society site. "They have no physical modality. They can't eat us. But that doesn't mean they can't mess with our heads." — David Brin: Brin describes the alien crystal artifacts in Existence and their psychological influence on humanity.

Implications: The episode frames space exploration as both scientifically vital and culturally inspiring. It urges public support for planetary science, imagines plausible long-term futures for humanity, and reinforces that discovery depends on sustained funding, curiosity, and broad participation.