There are thousands of unsolved events in the history of the world. A lot of research has been done about these events, different theories have been put forward, but a complete conclusion has not been reached. It is thought that these events, the cause of which have not been explained for years, will continue to leave a question mark in the minds. Some of them are as follows;
1- Phoenix Lights

Phoenix Lights were seen in Phoenix, Arizona in 1997. These lights, seen in the sky by hundreds of people, are called UFOs. On the day the lights were seen, there were thousands of people calling newsrooms and reporting seeing circular orange lights in the sky. It has been described that these lights seen in the sky are a flying object, but the mystery of the event is still unsolved.
2- Lost Malaysian Airplane

in 2014, Malaysia’s MH370 Flight No. disappeared over the Indian Ocean 40 minutes after take-off. The plane took off from Kuala Lumpur, the capital of Malaysia, to Beijing, the capital of China. It was presumed that it crashed due to the inability to receive a signal from the aircraft. However, during the researches, no parts or traces of the aircraft were found again. How the plane disappeared is among the issues that remain a mystery.
3- Yonaguni Underwater Ruins

The underwater ruins of Yonaguni were discovered in Japan in 1986. It is a common belief that these pyramid-shaped remains would not have been possible to form naturally. However, no human traces were found in the area. Whether the remains are man-made or a natural formation remains a mystery.
4- Nazca Lines

Nazca Lines, It is located in the Nazca Desert in Southern Peru. It consists of huge animal figures and different shapes drawn on the desert. By whom, for what purpose and how these lines were drawn on the floor of the desert years ago are among the subjects that have been researched for a long time. Many theories have been put forward on the subject, but a complete conclusion has not been reached.
5- Tunguska Incident

The Tunguska event is known as an eruption in central Siberia in 1908. What caused this event, which was a big celestial explosion, and how it came about are still unsolved issues. After the explosion, serious damage occurred in the natural environment. An asteroid was thought to have struck that area, but no part of the asteroid was found.
6- Howling of Taos

The Taos Hum is a sound that is claimed to be heard by people in many parts of the world. It is said to be similar to the sound coming from the engine of a vehicle. This humming sound has been heard at different times and by different people in many places from England to New Mexico. However, the source of the sound could not be determined exactly.
7- Crystal Skulls

Maya and crystal skulls found among Aztec ruins, have been found in Mexico and Central America. How and why these skulls, which are made of a single piece of clear quartz stone, are not fully understood. It is estimated that it was not possible to do such a thing with the technology of that period. For this reason, theories are being put forward as it may be related to aliens.
8- Anunnaki

The Anunnaki are drawings of Sumerian deities known as inscriptions. They stand out with their gigantic dimensions and different appearances. These drawings, which are frequently encountered in Sumerian inscriptions and unearthed artifacts, are thought to be beings from outer space. It has not been fully determined whether they are imaginary or real entities.
9- Bermuda Triangle

The Bermuda Triangle is located in the Atlantic ocean. Many ships and planes have disappeared in the region, which has resembled a triangle for many years. Many theories have been put forward about the region and scientific research has been done. However, the exact cause of the events has not been explained.
10- The Dyatlov Pass Incident

Dyatlov Pass, It is located in the Ural mountains in Russia. 9 mountaineers, consisting of a student group, died in 1959 at the Dyatlov pass. The cause of the tragic death at the gate has not been fully resolved. Theories have been put forward, such as the military experiments or the snow monsters, but no conclusion has been reached.
11- Continent of Mu

The continent of Mu is a mythical civilization claimed to have sunk 14 thousand years ago. According to the legends told, the Continent of Mu is a continent that is located between the continents of Asia and America and is much larger than Australia. The continent sank as a result of a disaster in the 12th millennium BC. However, there is no clear information about this issue.
12- The Lost Continent of Atlantis

The Lost Continent of Atlantis; It is a widely known mythical continent that the famous philosopher Plato mentioned in his books. No information could be found about the whereabouts of the continent, which has been the subject of research for hundreds of years, and which civilization it belongs to. In addition to those who say that the continent is just a myth, there are also those who say that Antarctica is under the glaciers.
13- Terra-Cotta Army (Earth Soldiers)

Terra-Cotta Army It was accidentally discovered by a farmer in China in 1974. Army horses, chariots, swords and arrows, which have been underground for 2,000 years, have been buried. The life-size soldiers are made of clay and terracotta. It has not been fully resolved by whom and for what purpose this huge army, which has around 8 thousand soldiers.
14- Americas Area 51

Area 51, which is considered top secret and located in America, has been among the topics that have been investigated for many years whether it is fact or fiction. District 51 is located 153 km north of Las Vegas, USA, near Groom Lake. It is surrounded by the Nevada Test Site and the Nellis Air Force Field. No unauthorized person is allowed to enter the highly secret area, and what is done there is not explained.
15- The Dark Knight Satellite

Dark Knight satelliteIt is said that the Earth has been orbiting the earth for about 13 thousand years and sending signals in an incomprehensible language. Where it comes from and what the signals it sends mean have not been found exactly. Many researches have been done on the subject and different claims have been put forward.
