The Sun is the only and central star that exists in our Solar System. Along with this, the eight known planets of our galaxy have been traveling for more than 10,000 years within a cloud of stardust that forms one of the galaxies in the universe.
The speed at which planets usually travel is very different, and is usually expressed in kilometers per second. The orbit of the planets of the Solar System do not rotate in circles, but they do so forming a perfect ellipse , and for this reason the speed of the planets is faster as they approach the Sun.
For example, on Earth we rotate at a speed of 1,000 kilometers per hour . Although the feeling is that the Earth is never spinning, even while we sleep, the planet continues to maintain that cruising speed every day of the year and throughout its life. It would be a big problem if planet Earth stopped rotating.
How fast do the planets rotate?
It was Nicolas Copernicus who discovered that it was the planets that revolved around the Sun and not vice versa, it was not until Kepler that we learned what the descriptions of the orbits were like . Thanks to his work with Tycho Brahe, Kepler came to describe the orbit of the planets and developed his theory of Kepler’s three laws.
Thanks to these researchers, in subsequent years we learned how fast the planets in the Solar System rotate. This would be the average:
Mercury: 47.87 km / s
Venus: 53.02 km / s
Earth: 29.78 km / s
Mars: 24.07 km / s
Jupiter: 13.07 km / s
Saturn: 9.69 km / s
Uranus: 6.81 km / s
Neptune: 5.43 km / s
The planets, according to Newton, move falling towards the Sun, that is, they move laterally at a speed for which they reach and go around the same starting place over and over again.
Speed of the Sun in the Milky Way
The Sun revolves around the center of our galaxy. Like him, hundreds of millions of stars do the same. The Milky Way is immensely large, so the measurements that we know of measurement are somewhat brief to express the speed of the Sun in the Milky Way.
Expressed in kilometers, the orbiting radius of the Sun in the Milky Way would be 250,000,000,000,000,000.
For this reason, the experts had to invent a new form of measurement to express these numbers as easily as possible. The light-year was invented, which is the distance that light travels throughout a year.
Now, the Sun moves at a speed of 792,000 kilometers per hour, describing an immense orbit.
