
The world loves mysteries. There are so many events and occurrences that happen on this planet that have no rational or logical explanation. Extraterrestrials, hoaxes, paranormal activities, and conspiracies lie at the root of most unsolved mysteries. Here are 6 mysteries that remain unsolved.
1.) The Bloop

Isn't it amazing!?
The Bloop was a strange low frequency underwater sound heard in the summer of 1997. The sound was traced to somewhere off the southwestern coast of South America and was detected by the NOAA using U.S. Navy equipment originally designed for detecting Soviet submarines. The Bloop could be heard on receptors from as far as 5,000 km away (about 3,100 miles). Many cryptozoologists believe the sound came from a living creature. However, in order for that to be true, the “creature” had to have been many times larger than the Blue Whale, which is the largest animal on Earth. Other “Bloops” have occurred throughout the years, making it an unexplained phenomenon.
2.) D.B. Cooper

On the day before Thanksgiving in 1971, a man named Dan Cooper boarded a flight from Portland, Oregon to Seattle, Washington. Once the flight started, he handed the flight attendant a note saying the plane was being hijacked and he wanted $200,000. Once the plane landed, he received the money and the plane took off again toward Reno, Nevada. However, he never made it to Reno. Cooper jumped out of the plane into the dark, raining Washington wilderness, never to be seen again. While $5,800 of the $200k ransom was found in 1980 soggy and washed up on the Columbia River (by matching the serial numbers), the rest and Cooper himself has remained missing. It is the only unsolved hijacking in American history.
3.) The Piri Reis Map

The Piri Reis Map is a map drawn by Ottoman-Turkish cartographer Piri Reis in 1513. Most of the map is pretty regular, showing the west coast of Northern Africa and Europe. The map also shows the east coast of Brazil and some islands like the Azores and Canary Islands. The most startling and controversial part of the map is the landmass on the southern portion of the map. Many claim that this landmass is proof that Antarctica was explored earlier than previously thought, supporting theories of global exploration before Columbus. Others claim that the map was based on knowledge that extraterrestrials based down to humans based on their exploration of Earth.
4.) The Voynich Manuscript

The Voynich Manuscript is a document written in a strange language. The language is so strange that no one has ever deciphered even a single letter from it. No one. Not military codebreakers from WWII, linguists, or cryptographers. The Manuscript also depicts naked women bathing in a green liquid. The book contains sections about astronomy, biology, recipes, and plant life. The text remains unsolved today, even though it was written in somewhere between the 15th and 16th century.
5.) The Giant Stone Balls of Costa Rica

In the 1930′s, men clearing a jungle for a banana plantation found balls. Giant stone balls. It turns out these stone balls are all over Costa Rica. The workmen moved some, while other balls were blown up. It has been speculated the balls were in alignment according to some astronomical object, while others speculate that there is a coffee bean in the center of the ball. According to a laser study, the balls are 96% perfect, which begs the question. Who made them? Why did they? What purpose do they serve?
6.) The Mary Celeste

The Mary Celeste had a crew of 8 men and 2 passengers (Captain Benjamin Briggs’s wife and 2 year old daughter). Captain Benjamin Briggs was a respected and experienced captain, and his crew was trustworthy and capable. His cargo was 1700 barrels of alcohol and the destination was Genoa, Italy. After having dinner with his friend and fellow captain the night before (who was going to be on the same route just a few days behind him), the Mary Celeste left New York headed for Italy in 1872. They were never seen again. The ship was found completely abandoned with no sign of struggle, the lifeboat missing, and all documents missing except the captain’s log. In 1873, two lifeboats were found. One of them had 5 bodies in it, and the other had one body with a U.S. flag. The bodies were not identified.
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