An Eye on the Sun (In the Middle of a Lake)

Episode Summary

Executive Summary: This Planetary Radio episode centers on safe eclipse viewing, Bill Nye’s science updates, and a feature on the newly renamed Goody Solar Telescope at Big Bear Solar Observatory. The program emphasizes public science outreach, solar-observing technology, space weather, and Phil Goody’s legacy in building a world-leading solar facility and training a generation of solar physicists.

Main Topics: Safe eclipse viewing for the Great American Eclipse: Emily Lockdawala explains how to make a pinhole projector as a cheap, safe, and classroom-friendly way to view a solar eclipse, especially for people without eclipse glasses or travel plans. Bill Nye on solar-system science and current space news: Bill Nye discusses astrobiology (vinyl cyanide as a possible membrane ingredient on methane worlds), NASA’s SLS crewed-launch cost concerns, and continued RD-180 engine production amid U.S.-Russia tension. The Goody Solar Telescope and Big Bear Solar Observatory: The episode tours the telescope, explaining its off-axis design, heat-management system, lake setting, and role as the world’s highest-resolution solar telescope and a pathfinder for future instruments. Phil Goody’s scientific legacy: Phil Goody describes how he moved from theoretical nuclear physics into solar astronomy, built the observatory’s program, and trained many leaders in heliophysics around the world. Space weather and Earth impacts: NJIT leaders discuss how solar flares and coronal mass ejections affect communications, infrastructure, and the need for national space-weather forecasting and research. Bruce Betts’s weekly sky update and trivia: Bruce previews the Perseid meteor shower, the August 21 eclipse, recalls Mars mission milestones, and runs the weekly contest and trivia around the Sun’s composition.

Key Arguments: A pinhole projector is a safe eclipse-viewing method because it avoids direct eye contact with the Sun and can be made with common materials. Educational eclipse outreach should prioritize accessibility, since not everyone can travel to totality or has certified eclipse glasses. Vinyl cyanide may plausibly serve as a cell-wall material in methane-based alien life, showing astrobiology can infer possible biochemistry from chemistry and environment. NASA is effectively signaling that crewing the first SLS launch would be expensive and should only happen if Congress funds the added cost. Off-axis telescope design improves solar observing by reducing diffraction and increasing contrast for low-contrast solar features. The lake location of Big Bear Solar Observatory helps stabilize daytime seeing by reducing ground-driven thermals. The Goody Solar Telescope’s size and adaptive optics make it a critical precursor and complement to future giant solar telescopes such as DKIST. Phil Goody’s greatest legacy is not only the telescope but the network of scientists he trained, many of whom now lead solar physics efforts globally. Space weather is becoming a national priority because solar storms can disrupt communications and affect technology and infrastructure on Earth. Earthshine measurements help estimate Earth’s albedo and search for biosignatures such as the vegetation ‘red edge’ in reflected light.

Data Points: Eclipse date: August 21, 2017 - Great American North American total solar eclipse discussed throughout the episode Pinhole projector materials: 1 pin and 2 cards - Emily’s eclipse-viewing method Audience size for school viewing: about 500 kids - Emily said she would lead partial-eclipse viewing at her local elementary school Bill Nye TV season: 12 more shows - Second season of Bill Nye Saves the World Bill Nye premiere timing: November - Expected Netflix release for season 2 SLS crewed-launch cost: $600 million to $900 million - Bill Nye summarized NASA’s estimate for putting people on the first Space Launch System Atlas V engine: RD-180 - Russian-built engine used on Atlas V launch vehicle Solar telescope aperture: 1.6 meters - Goody Solar Telescope size Primary focus image size: 36 millimeters across - At F/2.4 the solar image at primary focus is very small and intensely bright Collected solar power: about 2 kilowatts - Power entering the telescope at the primary focus Field stop: 3 arc minutes - Heat dump limits field to about one-tenth of the Sun’s diameter Secondary field stop: 90 arcseconds - Further limits the usable field of view Resolution in visible light: about 50 kilometers - Phil Goody described the telescope’s resolving power on the Sun Budget for Goody Solar Telescope: $25 million - Phil contrasted it with larger future solar projects DKIST budget: about $400 million - Referenced as a much larger four-meter solar telescope project in Hawaii Big Bear telescope construction timeline: about five years - Phil noted rapid development from conception to operation McMath-Pierce aperture: 1.6 meters - Previous U.S. flagship solar telescope on Kitt Peak Meteor shower peak: August 12-13 - Perseid meteor shower peak dates Perseid rate: 60 to 100 meteors per hour - Estimated in dark-sky conditions without moon interference Phoenix launch anniversary: 10 years - Bruce noted Phoenix launched ten years earlier Curiosity landing anniversary: 5 years - Bruce noted Curiosity landed on Mars five years earlier Trivia answer: carbon - Fourth most common element in the Sun by mass Contest deadline: August 9 at 8 a.m. Pacific - Entry deadline for identifying the beads of sunlight seen before totality

Pivotal Quotes: "Radio is the most visual medium, Matt. It’s all in your mind." — Bill Nye: Bill opens his segment by joking about the imaginative nature of radio and science storytelling "We’re collecting two kilowatts of power. A lot of heat." — Claude Plymate: Explaining the solar telescope’s heat-management challenge at the primary focus "If we’ve seen further, it’s because we’re standing on the shoulders of giants." — Phil Goody: Used to describe scientific progress and the contributions of earlier researchers

Implications: Listeners get practical eclipse safety guidance and a clearer picture of how modern solar telescopes advance both solar physics and space-weather forecasting. The episode also highlights how mentorship, engineering innovation, and public outreach shape future astronomy.