Science Weekly Can a revolutionary new telescope solve the mystery of planet nine?
11 snips
Jun 24, 2025 Scott Sheppard, an astronomer at the Carnegie Institution for Science, dives deep into the cosmic mysteries of our solar system. He discusses the controversial demotion of Pluto and what defines a planet. The conversation heats up with the exploration of strange celestial orbits, hinting at the elusive Planet Nine. With the newly launched Vera C Rubin Observatory, Scott reveals hopes that it might finally solve the mystery of what lies beyond Neptune. This exciting technology could reshape our understanding of planetary science forever.
AI Snips
Chapters
Transcript
Episode notes
Pluto's Surprising Demotion
- Pluto was considered the ninth planet for 76 years before being downgraded in 2006.
- This decision shocked many people and sparked widespread public upset.
Why Pluto Lost Planet Status
- Pluto lost its planet status because it shares its orbit with many similar-sized objects.
- Being the biggest object alone in its orbit is key to planet classification today.
Sheppard Remembers Pluto Vote
- Scott Sheppard was in grad school during Pluto's demotion vote by the International Astronomic Union.
- The decision was divisive with strong opinions on both sides, showing how value-laden naming can be.