A Timeline of the U.F.O.s... www.nytimes.com

Alien neutrinos reveal new... www.nbcnews.com

South Pole | Bernard Voyer... www.bernardvoyer.com

Ancient Aliens: UFOs... m.youtube.com

Wow, What Is That?' Navy... www.nytimes.com

Military whistleblower... www.newsnationnow.com

Unidentified Flying... www.britannica.com

The Alien Invasion of... www.cnet.com

UFO CRASH LANDS IN... m.youtube.com

See that? Conspiracy... www.nbcnews.com

Antarctica's Secret Alien... m.youtube.com

UFO over Indian Ocean?... www.nbcnews.com

US says UFO sightings... www.bbc.com

NASA is preparing to... www.nationalgeographic.com

List of reported UFO... en.wikipedia.org

The Truth About Antarctica... longnow.org

US says UFO sightings... www.bbc.com

UFO sightings: Pilots... www.ctvnews.ca

Bright blue UFO seen... abc11.com

The UFO sighting... www.bbc.com