SHERAZUR RAHMAN##
Space scientists have found that our solar system is moving around the Milky Way Galaxy at a speed of about 720,000 km per hour. This speed seems very high to us, but in reality, almost every galaxy has several other amazing objects or star systems that are traveling in the galaxy 10 times faster than our solar system, or about 82,00,000 kilometers per hour or more. In the language of cosmology science, this kind of star with an amazing speed is called a hypervelocity star system. Basically, when a binary star system moves close to a supermassive black hole in the center of a galaxy, the strong gravitational force of the black hole pulls one of the stars of the binary star system into the black hole, and as a result of the complex interaction between them, the other star of the binary star is thrown out of the black hole at a very high speed. Then this star transforms into one that runs on its own with incredible speed. One such star in our Milky Way galaxy is S5-HVS1. Scientists discovered it in 2019, and they observed that its speed could be about 1750 kilometers per second or more. They think that this may be the fastest-moving star or object in our Milky Way galaxy. In fact, astronaut Jack Hills first predicted the existence of such stars in 1988. But its existence was actually proven for the first time in 2005. On the other hand, scientists have observed that the closest hypervelocity star so far is 19 kiloparsecs away from our solar system. Moreover, it is believed that there may be around 1,000 hypervelocity stars in our galaxy, but space scientists have so far found the existence of 20 such extremely fast hypervelocity stars.##
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