Science Trek

Planets: What Exactly is a Planet?

Special | 5m 29s | Video has closed captioning.

How we’ve defined what a planet is has changed over time. Is Pluto a planet? Is Ceres? Find out the difference between a planet and a dwarf planet and why scientists decided to change things up.

Aired: 10/01/20

Rating: TV-G

Problems Playing Video? | Closed Captioning

Major Funding by the Laura Moore Cunningham Foundation and the Idaho National Laboratory. Additional Funding by Sparklight, the Friends of Idaho Public Television and the Corporation for Public Broadcasting.

Science Trek

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Science Trek

Science Trek is a place where parents, kids, and educators can watch short, educational videos on a variety of science topics. Every Monday Science Trek releases a new video that introduces children to math, science, technology, engineering, and math (STEM) career potentials in a fun, informative way.