If you take into account the movement of the earth and the solar system, how fast are you moving in bed?

If you take into account the rotation of the earth, its rotation around the sun; the rotation of the sun around the galaxy; and the rotation of the galaxy around the center of the universe (wherever it is). So how fast am I moving even when I'm lying in bed sleeping?

This is not certain. Your latitude on Earth—how far you are from the equator—and the time of year make you move at different speeds. I'll explain why in a moment. Your movement depends on four factors: the rotation of the earth, the revolution of the earth around the sun, the rotation of the sun around the center of the galaxy, and the rotation of the entire galaxy.

Now, at the equator, the Earth spins at about 0.5 kilometers per second. But if you are at the Earth's South Pole or North Pole, your rotation speed is 0! If you can't grasp the concept quickly, imagine a person standing on the equator. Although she stood still, she actually moved a great distance during the rotation of the earth.

In one day, the Earth's rotation carries her a distance equivalent to the circumference of the Earth - about twenty-four kilometers. Now, you can imagine a person standing at the North Pole. The Earth's rotation doesn't take him any motion - so his travel distance is 0. To make the calculations easier, we generally take your distance at the equator Moving speed.

Second, the speed of the earth's rotation around the sun is about 30 kilometers per second. This speed is much faster than the earth's rotation speed of 0.5 kilometers per second. In fact, since the speed of the earth's rotation is too small compared with the speed of the rotation around the sun, we generally ignore it.

Currently, the entire solar system is rotating around the center of the Milky Way at a speed of 230 kilometers per second. For half the year, the Earth orbits the sun in the same direction as it orbits the center of the Milky Way; but for the other half of the year, they're in the opposite direction—due to a cause called "countercurrent," and some Sometimes we turn "downstream". When the earth rotates in the same direction around the center of the galaxy and the sun, the total speed of the earth's rotation is the sum of the two, that is, the sum of 230 kilometers per second and 30 kilometers per second, which is 260 kilometers per second. When in the opposite direction of rotation, we need to do the subtraction - 230 kilometers per second minus 30 kilometers per second equals 200 kilometers per second.

Therefore, in the calculation above, we calculated the three factors together for the first time. In the end, the rotation velocity of the Milky Way is obtained, which can actually be decomposed into the motion of the Milky Way in the local group of galaxies-the rotation speed of a supercluster of about 20 galaxies, and the rotation speed of an even larger group of galaxies. They are about 40 kilometers per second and 600 kilometers per second.

Combining all the factors we get: 30 km/s + 230 km/s + 40 km/s + 600 km/s = 900 km/s

So, when you are in bed, the movement speed is very fast!