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Space Junk in a Bookstore

Pale Blue Pod

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The Oort Cloud

The Kuiper belt itself is 20 astronomical units or 2 billion miles across. We discovered that in 1992 out beyond the orbit of Neptune, it's four people who don't consider Pluto a planet. The reason Pluto was demoted was because all of those other big objects in the Kuiper Belt would then add thousands of planets to our list in the solar system.

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