Are the tickets non-refundable?

What is the other official name for UFO's?

UFO seen by many at the Olympic Opening Ceremonies in London, England 

Alien Autopsy: Fact or Fiction showing the autopsy of an extraterrestrial 

Two instances of fleets of crafts hovering over Jerusalem, Israel, in 2011 

2000 acrobatic airshow in Santiago, Chile, showing an extra aircraft

Some Alien Trivia. Beginner and intermediate questions!