FAST finely characterizes active, repetitive, and rapid radio bursts

FAST finely characterizes active, repetitive, and rapid radio bursts

1. Where does the seawater come from: an endless ocean, with blue waves rolling and making people fascinated and confused: where does so much seawater come from? Some people believe that water is inherent to the Earth; Other scientists believe that the water on Earth was brought by comets that crashed into the Earth. At present, various opinions among scientists are still at odds. Where exactly seawater comes from remains to be further verified by people.

2. The Mystery of Mummy: The production of mummies is mixed with some mysterious and superstitious things. As for the production of mummies itself, it reflects the achievements of ancient Egyptian medicine. During the process of making mummies, the Egyptians accumulated a wealth of anatomical knowledge. Preliminary understanding of the relationship between human blood circulation and cardiac function, as well as the important role of the brain in the human body.

3. Legend of Death Island: In the North Atlantic, about a hundred kilometers away from Halifax in eastern Canada, there is a terrifying small island called “Saibu Island” that makes the crew very scared. The whole island is covered in fine sand, very desolate and terrifying. There are no tall trees, only some beach grass and short shrubs. For thousands of years, it is estimated that no less than 500 ships have been lost around this island, with a total of over 5000 deaths.

4. The Mystery of Pyramids: There are approximately 80 pyramids located on the west bank of the lower Nile River in Egypt. They are the tombs of ancient Egyptian pharaohs (kings). The largest pyramid is the tomb of Pharaoh Khufu of the Fourth Dynasty, built over 4500 years ago, with a tower height of 146.5 meters. It is estimated that supporting such construction projects would require a national strength of 50 million people, and the total population of the world around 3000 BC would not exceed 20 million.

5. Death Road: On a state highway in Idaho, USA, 14.5 kilometers away from McComb, there is a terrifying rollover zone known by drivers as the Idaho Devil’s Triangle. Once a normally moving vehicle enters this area, it will suddenly be thrown into the air by a mysterious force. Then he fell heavily to the ground, causing a devastating accident of car damage and fatalities.

6. The Mystery of Noah’s Ark: From a legend in the Bible: God saw human war and determined to punish humanity. God chose Noah’s family as the seeds of humanity to be preserved, and Noah built a ship called the “Noah’s Ark”. Noah brought a pair of each species, making it the world of life today. God rained continuously for 40 days, turning the world into a vast ocean, leaving only the people and animals in the ark unharmed.

7. The Mystery of the disappearance of the Mayan civilization: The Mayan civilization has always been the largest mystery in the world. The Mayan civilization was an ancient civilization located in Southeast Mexico, Guatemala, and other Central and South American regions. It seems to have risen overnight in the forest, gone through thousands of years of glory, and mysteriously disappeared again. The Mayans had a high level of knowledge in agriculture, mathematics, and astronomy. Today, there are still scattered descendants of the Maya living in various parts of the Americas.

8. The Loch Ness Monster: It is one of the most mysterious mysteries on Earth. The lake is located in the Grand Canyon of Scotland, with an average depth of 200 meters. The lake is not frozen all year round, and there is a river at the end of Hubei that connects to the North Sea. In April 1934, London doctor Wilson took a photo of the water monster with a camera, clearly highlighting its features: a long neck and a flattened head, resembling the extinct plesiosaur over 70 million years ago.

9. The Mystery of Mona Lisa’s Smile: Mona Lisa is a portrait painting of the famous Italian Renaissance painter da Vinci. For 500 years, people have been divided about the mysterious smile in Mona Lisa. Different viewers or at different times may feel different. Sometimes I feel that she laughs comfortably and gently, sometimes she appears serious, sometimes it seems slightly sad, and sometimes even shows mockery and ridicule.

10. Magical relics: relics, also known as spiritual bones. Buddhism has always regarded relics as treasures. Later, the emergence of physical relics further attracted people’s attention to Buddhism in the world. The reason for its attention is that this phenomenon is considered supernatural. In modern medical scientific research, relics undoubtedly belong to the crystallization of the human body. But there is currently no self explanatory explanation on how its physical properties should be analyzed.

11. The Mystery of Stonehenge: The famous ruins of Stonehenge are located on the Salisbury Plain, more than 100 kilometers southwest of London, England, and are the most famous and mysterious prehistoric ruins in Europe. Built 4300 years ago, the main body of the stone formation was composed of several complete concentric circles arranged by giant stone pillars. The periphery of the stone formation is a circular mound and ditch with a diameter of about 90 meters. The small boulders weigh 5 tons, while the large ones weigh up to 50 tons.

12. The Mystery of Footprints 200 Million Years Old: The emergence of humans only occurred 2-3 million years ago, but some archaeologists have discovered human footprints on fossils dating back 200 million years, with shoes on the footprints! This surprised everyone greatly. Who left these footprints? Is there still a trace of human activity two hundred million years ago? The places where these footprints fossils were discovered are all in the United States.