Synopsis
What is a planet? This question has been pondered by many since the early Greeks came up with the word "planetes". Since then the number of "planets" in our solar system has fluctuated, sometimes numbering as high as 15, before it was determined that some were actually asteroids. Topic: A fascinating travel along the "Kuiper Belt highway" at 100mph to explore the far reaches of our solar system that discovers how vast our corner of the galaxy really is.
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Details
- Running time
- 7 minutes
- Collection
- NASA