Closing in on a Giant Ghost Planet by Charles Q. Choi | Free Audiobook

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Title: Closing in on a Giant Ghost Planet
Author: Charles Q. Choi
Narrator: Jef Holbrook
Format: Unabridged
Length: 8 mins
Language: English
Release date: 10-31-16
Publisher: Scientific American
Genres: Science & Technology, Magazine & Radio

Summary:
Scientists have shrunk the hunting ground for the mysterious Planet Nine by half.
"Closing in on a Giant Ghost Planet" is from scientificamerican.com, published on October 26, 2016.

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