Things have been very serious and very depressing on our TEOTWAWKI specials; so I thought it was about time to do a little bit of light-hearted debunking, rather than ranting about the genuine dangers of apocalypse that might await us in the future. I'll discuss why the Roswell story doesn't add up - even a little bit - what an actual alien invasion could you like; and why it's just so damn unlikely that any of these alien abduction stories are especially true. We'll even talk about reports of "UFOs" that stretch all the way back to Medieval Europe - with a healthy dose of skepticism.  This is the first part of a TWO-PART episode. The second part will be available as a Premium episode. If you donate $3 or more via the Paypal link at www.paypal.me/physicspod I will give you a download link to the second part of the episode - the Premium bit - (enclose your email or send it to me on Twitter, or via a comment on www.physicspodcast.com). All Patreon subscribers will also get access to a special RSS feed containing all bonus episodes, and other extra content as and when I can produce it! You can find our Patreon at www.patreon.com/PhysicalAttraction This is not about making me a millionaire; it's about helping us cover the show costs, and all the time I spend making these shows... Although making me a millionaire would be a decent side-effect. So remember, you're not just paying for the episode: you're helping us produce every episode, and helping me carry on bringing you the show.