It is said that UFOs and Aliens are seen all the time, but few are easy to believe that they are true. Many people see mysterious lights somewhere. Lights are commonly seen, but when people see a strange light at night they might think of UFOs. Many people swear they have been abducted or seen flying saucers, and some describe the same thing and have been fascinated by creatures from other planets. There have been a few shows and movies produced about these types of topics. Many people are curious about this issue and this is not surprising. I believe in aliens because we live in the huge universe with billions of planets, so definitely some existences on other planets might be possible and they might have technologies if they want to cross the universe and visit other planets. Sightings, crop circles and alien abductions are reasons linked to the existence of UFOs and Aliens. For these reasons, I aim to prove that aliens exist and have been on Earth. Many flying objects have been observed and never identified every year. One of the most famous cases of UFOs and aliens is the Roswell incident in 1947 in New Mexico, but it was quickly covered up by the government and so many people are still curious about this happening. The US government has given some illogical reasons to explain the incident. Additionally, in the Roswell case, Brown wrote that a funeral home was secretly contacted to order four child-sized, hermetically sealed coffins. Therefore, these bodies could be dead aliens after being examined. For example; the government said it was a big balloon explosion in the sky and no one believed it. Few Roswell accident reports showed that the flying saucer was made of unknown materials. After this incident, some people started to be… The focus of the paper… and Welcome to crop circles in the UK and around the world: scientific evidence, investigations and photos of crop circles. 22 August 2002. Web. 01 June 2010. .Bolt, Marie. “The Best Cases of Alien Abduction: Psychic Science.” Parapsychic Sciences - Discovering Angels, Spirits, Auras, Holistic Techniques, Crystals, Spirituality. 29 May 2010. Web. 01 June 2010. .Perina, Kaja. "Alien Abductions: The Real Deal? | Psychology Today." Psychology Today: Health, Help, Happiness Find a therapist. August 30, 2004. Web. June 1, 2010. .Mark Baker The Register-Guard. The Register - Guard. Eugene, Or.: May 22, 2005, p. G.1