All Episodes

November 9, 2025 49 mins
Light Pollution, Space Parasols, and Salvaging Satellites
In this engaging Q&A episode of Space Nuts, hosts Andrew Dunkley and Professor Jonti Horner tackle a range of thought-provoking questions from listeners. From the effects of light pollution on stargazing to the intriguing concept of a space parasol for climate control, this episode is packed with cosmic curiosities and insightful discussions that will leave you contemplating the future of humanity in space.
Episode Highlights:
Light Pollution and Night Sky Visibility: Mark from Connecticut wonders how quickly the night sky would become visible if all electric lights suddenly went out. Andrew and Jonti discuss the immediate effects of light pollution and the importance of dark adaptation for optimal stargazing, emphasizing the impact of atmospheric conditions on visibility.
Geoengineering and Space Parasols: Doug raises the question of whether a parasol at Lagrange Point 1 could help mitigate climate change. The hosts explore the feasibility of such a project, discussing the challenges of scale, technology, and the implications of geoengineering on the Earth's climate system.
Salvage Rights in Space: A listener inquires about the ownership of defunct satellites and the potential for salvage rights in space. Andrew and Jonti explain the current legal landscape surrounding space debris, the challenges of recovery, and the evolving nature of space law as commercial interests grow.
Searching for Extraterrestrial Life: Robert from the Netherlands asks about the role of radio waves in searching for alien civilizations. The hosts delve into the efforts of the SETI program, the challenges of detecting signals, and the potential of the Square Kilometer Array to listen for extraterrestrial communications.
For more Space Nuts, including our continuously updating newsfeed and to listen to all our episodes, visit our website. Follow us on social media at SpaceNutsPod on Facebook, X, YouTube Music Music, Tumblr, Instagram, and TikTok. We love engaging with our community, so be sure to drop us a message or comment on your favorite platform.
If you’d like to help support Space Nuts and join our growing family of insiders for commercial-free episodes and more, visit spacenutspodcast.com/about.
Stay curious, keep looking up, and join us next time for more stellar insights and cosmic wonders. Until then, clear skies and happy stargazing.

Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
Mark as Played

Advertise With Us

Popular Podcasts

Stuff You Should Know
Medal of Honor: Stories of Courage

Medal of Honor: Stories of Courage

Rewarded for bravery that goes above and beyond the call of duty, the Medal of Honor is the United States’ top military decoration. The stories we tell are about the heroes who have distinguished themselves by acts of heroism and courage that have saved lives. From Judith Resnik, the second woman in space, to Daniel Daly, one of only 19 people to have received the Medal of Honor twice, these are stories about those who have done the improbable and unexpected, who have sacrificed something in the name of something much bigger than themselves. Every Wednesday on Medal of Honor, uncover what their experiences tell us about the nature of sacrifice, why people put their lives in danger for others, and what happens after you’ve become a hero. Special thanks to series creator Dan McGinn, to the Congressional Medal of Honor Society and Adam Plumpton. Medal of Honor begins on May 28. Subscribe to Pushkin+ to hear ad-free episodes one week early. Find Pushkin+ on the Medal of Honor show page in Apple or at Pushkin.fm. Subscribe on Apple: apple.co/pushkin Subscribe on Pushkin: pushkin.fm/plus

Dateline NBC

Dateline NBC

Current and classic episodes, featuring compelling true-crime mysteries, powerful documentaries and in-depth investigations. Follow now to get the latest episodes of Dateline NBC completely free, or subscribe to Dateline Premium for ad-free listening and exclusive bonus content: DatelinePremium.com

Music, radio and podcasts, all free. Listen online or download the iHeart App.

Connect

© 2025 iHeartMedia, Inc.