Dr. Ashraf Tadros, the former head of the astronomy department at the National Institute for Astronomical Research, stressed that we live on the globe that revolves around itself at a speed of 450 meters per second, and this earth spins in its orbit around the sun at a speed of 30 kilometers per second, and the sun is only a small star in the galaxy The Milky Way galaxy rotates in its orbit around the center of this galaxy at a speed of 230 kilometers per second, and one cycle around the galaxy occurs in 250 million years.
In his remarks, the former head of the astronomy department at the National Institute of Astronomical Research revealed that there are 200 billion stars in our galaxy, including giant stars estimated at hundreds and thousands of times the size of the sun, including medium and small stars, explaining that most of these stars have planets revolving around them similar to planets The solar system, as well as moons, revolve around those planets, such as Earth’s moon.
Tadres indicated that there are billions of planets and billions of moons that are naturally present in the galaxy, and our galaxy is not the only one in the universe. It is 2.5 million light years away from us.
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