All the heavenly bodies in the universe move around another body. This is called orbit. The moon moves around the Earth. Again, the Earth and other planets move around the Sun. Is the Sun the center of the Universe? The answer is certainly “no.” The sun also moves around a larger object. The sun is orbiting the center of the Milky Way, so we will talk below about what is the movement of the sun and the Milky Way in the universe. What is the movement of the sun and the Milky Way in the universe The sun is one of the stars of the Milky Way. There are about 300 billion stars in this galaxy. The Sun is located in this Galaxy more than 1/2 way from the center to the edge or end of the Galaxy. The Milky Way is our home galaxy in the universe. It contains the Solar System. It is a barred spiral galaxy and is 13.2 billion years old or as old as the universe itself. The Milky Way is part of the Local Group of galaxies. The Milky Way is 100,000 light-years in diameter, 50,000 light-years in radius, and 1,000 light-years thick. Orbit of the Sun The Sun is located about 26,000 to 30,000 light-years from the galactic center. The circumference of the Sun’s orbit is about 150,000 light years. The sun moves at a speed of 782,000 km / hour or 486,000 m / hour, completing an orbit within 225 to 250 million years. This is known as a galactic year or a cosmic year. The sun is about 5 billion years old. We can say then that it has completed between 20 and 22 orbits since its birth. The Sun’s orbit around the Galactic Center is roughly elliptical with additional perturbations due to galactic spiral arms and non-uniform mass distributions.Furthermore, the Sun oscillates up and down relative to the galactic plane approximately 2.7 times per orbit. In its movement through the Milky Way, the Sun moves in the general direction of the Star Vega. The movement of the Sun through the Milky Way regularly sends comets into the inner solar system. The sun bounces up and down through the plane of the galaxy and dislodges comets from their paths. Some collide with Earth. Scientists believe that the collision of comets with Earth may have caused the mass extinction of life on Earth. Dinosaurs may have become extinct for the same cause about 65 million years ago. Our current position in the Galaxy suggests that we are now very close to another similar period. It is hypothesized that, while the “Bounce” effect may have caused the extinction of life in one location, it may also have helped the spread of life elsewhere. The impact of the collision of comets may have thrown debris containing microorganisms into space throughout the universe. The movement of the Milky Way The movement of the Galaxy is studied by stellar kinematics. It rotates on itself at a radial speed of about 220 km / s and it takes about two hundred million years to make one complete revolution. This too, as with other galaxies, is a differential rotation: the innermost stars rotate faster than the outer ones, which should have behaviors in line with Newton’s law, even if it is precisely from the behavior of the stars. outermost galaxies that the dark matter-based theory began.
