Uploaded February 2025 | Updated September 2026, 1 day ago
John E. Moores (johnemoores.com/) is a planetary scientist and associate professor at York University. He is a member of the Royal Society of Canada, formerly served as the Science Advisor to the President of the Canadian Space Agency and has contributed to five NASA and ESA-led space missions. He is the co-author of Daydreaming in the Solar System, which imagines a future when visiting other planets is as common as hiking in a national park. The book is also grounded in the latest scientific knowledge about planetary geophysics. In addition to talking about the book, John answers some of Leslie’s pressing questions about the solar system, including: How do planets and moons become tidally locked? Why are most planets in the solar system aligned in a plane? Why are there gaps in Saturn’s rings? Is there life elsewhere in the solar system, or in the universe?
Podcast for Inquiry is hosted by Leslie Rosenblood and brought to you by the Centre for Inquiry Canada. Join today! Produced by Zack Dumont, Martin Zielinski, and Leslie Rosenblood. Support Podcast for Inquiry on Patreon: patreon.com/PodcastforInquiry. Send your thoughts and feedback to podcast@centreforinquiry.ca.
John E. Moores (johnemoores.com/) is a planetary scientist and associate professor at York University. He is a member of the Royal Society of Canada, formerly served as the Science Advisor to the President of the Canadian Space Agency and has contributed to five NASA and ESA-led space missions. He is the co-author of Daydreaming in the Solar System, which imagines a future when visiting other planets is as common as hiking in a national park. The book is also grounded in the latest scientific knowledge about planetary geophysics. In addition to talking about the book, John answers some of Leslie’s pressing questions about the solar system, including: How do planets and moons become tidally locked? Why are most planets in the solar system aligned in a plane? Why are there gaps in Saturn’s rings? Is there life elsewhere in the solar system, or in the universe?
Podcast for Inquiry is hosted by Leslie Rosenblood and brought to you by the Centre for Inquiry Canada. Join today! Produced by Zack Dumont, Martin Zielinski, and Leslie Rosenblood. Support Podcast for Inquiry on Patreon: patreon.com/PodcastforInquiry. Send your thoughts and feedback to podcast@centreforinquiry.ca.

![There Has To Be A Limit
We know there has to be a limit. There are boundaries for a safe operating space. [...] That we are pushing harder and harder and harder on these processes is just plain bad news.
We risk making our planet inhospitable to human life unless we constrain our activities to within the planetary boundaries Katherine Richardson and team identified. Learn more by watching the full conversation on Podcast for Inquiry. There Has To Be A Limit](https://i.ytimg.com/vi/ymQSYfJvYKM/mqdefault.jpg)




