When the Chinese government demolished one of its aging weather satellites a few weeks ago, they did more than just test out a potentially useful technology. They also cluttered up low Earth orbit with a huge amount of debris, and stirred up a comparable amount of controversy in the press. While nobody is yet quite sure what the motivation behind the test was (to send a message to the White House? to start discussions on a new space treaty?), there's been no shortage of speculation on the subject. What hasn't received much attention is the history of this technology. So this episode is all about the history of efforts to militarize space.