These are some of the biggest mysteries out there! There are so many unsolved mysteries so if you would like a part 2 then please be sure to hit the like button and leave a comment below! 5. Jack The Ripper. Perhaps the most notorious serial killer ever, the identity of Jack The Ripper is still unknown to this day. Jack The Ripper was responsible for the murders of five women in Whitechapel, London. He would often brutally dismember his victims upon strangling them. . The five that are generally accepted as the work of the Ripper are: Mary Ann Nichols, Annie Chapman, Elizabeth Stride, Catherine Eddowes and Mary Jane Kelly. An ongoing investigation has seen mass speculation over the years to who the killer actually was with theories that the Ripper may have been a doctor or a butcher demonstrating knowledge of the human anatomy based on the mutilations that occurred. Some of the main suspects, are: Montague John Druitt, George Chapman, Prince Albert, Michael Ostrog and Aaron Kosminsky. However, despite the hundreds of letters forwarded to the police, such as the famous “From Hell” letter, there are over 100 theories associated with Jack The Ripper. 4. The Hessdalen Lights. The Hessdalen Lights are unexplained nocturnal lights that was observed in the Hessdalen Valley in Norway. Hundreds of strange lights were observed and at the peak of activity there were around 20 reports a week. The mysterious lights make no audible sound, appear to be cool and do not leave any scorch marks on the ground. Despite ongoing research there has been no concrete explanation for this extraordinary phenomenon. With the flashing orbs being as large as cars, the Hessdalen phenomenon has attracted attention from many UFOlogists believing that it could be the presence of aliens. However, recently scientists hypothesise that the unusual lights could be formed by a natural ‘battery’ buried deep underground, created by metallic minerals reacting with a sulphurous river running through it. 3. Cicada 3301. Cicada 3301 is arguably the most mysterious Internet-based organisation in the world responsible for posting extremely complex puzzles. The first puzzle started on January 4th 2012 and was posted on 4chan. It is unclear to what the ultimate purpose of the organisation is with some believing it to be a recruitment tool for the CIA and others, to recruit a global think tank. Some have even claimed that Cicada 3301 is a cult or religion! However, what is clear is that the organisation is looking to recruit, “highly intelligent individuals”. 2. The Wow! Signal. In 1977, while working on a SETI project at the Big Ear radio telescope, Jerry Ehman came across a rather odd radio signal picked up by a radio telescope in Ohio. A computer recorded the signal as a string of 6 letters and numbers with the alphanumerical sequence: “6EQUJ5”. To his amazement, Astronomer, Jerry Ehman, saw the sequence, circled it and wrote one word in the margin of the print-out in red marker: “Wow!” The trace of the signal seemed to originate from the northwest of the globular cluster of M55 in the constellation Sagittarius, near the Chi Sagitarii star group. The entire signal sequence lasted for the full 72 seconds that the Big Ear radio telescope was able to observe it for, but has not been detected since. Could it have been a cryptic message from an extra-terrestrial alien civilisation? 1. The Zodiac Killer. The Zodiac Killer is the nickname given to an unidentified serial killer in the late 60s and early 70s who was accountable for the murders of at least five people, maybe more, in northern California. The Zodiac Killer claimed to have taken the lives of 37 individuals, however, investigators agree on seven, two of whom survived. From the seven, four of the targeted individuals were men and three were women between the ages of 16 and 29. The killer taunted and made threats to the police through letters sent to area newspapers. These letters included four cryptograms and of the four, one of them was solved. Despite this, the cracked cipher did not reveal any crucial information but instead contained a misspelled message including that he was collecting slaves for the afterlife and detailed that, “I like killing people because it is so much fun…” A number of suspects have been named, however, no one has been formally charged and arrested for the heinous crimes committed. The case to this day still remains open. Music = "Satiate" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 ****** Connect With Us! Twitter = ****** Google = ****** Facebook = ****** Fullscreen = ****** Check Out The Narrator = ******