It's true -- Earth's near orbit is filled with all sorts of stuff. Most of it is mundane, and most people honestly don't think about it too often. But, just recently, a mysterious unmanned craft landed after more than 900 days out there in the inky depths of space, prompting Ben and Matt to ask: What the heck is the X-37B actually doing up there -- and why are other countries building their own versions of this ship? Learn more in part two of this two-part series. They don’t want you to read our book.They don't want you to read our book.: https://static.macmillan.com/static/fib/stuff-you-should-read/See omnystudio.com/listener for privacy information.

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