If you consider the movement of the earth and the solar system, how fast are you in bed?

If you take into account the rotation of the Earth, its rotation around the sun; the rotation of the sun around the Milky Way; and the rotation of the Milky Way around the center of the universe (wherever it is). So how fast do I move even when I'm lying in bed?

This is not certain. Your latitude on Earth -- how far you are from the equator -- and the time of year can make a difference in how fast you move. I'll explain why right away. Your movement depends on four factors: the rotation of the earth, the rotation 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 rotates at about 0.5 kilometers per second. But if you are at the Earth's South 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 carried her a distance equal to one Earth's circumference—about 24,000 kilometers. Now, you can imagine a person standing at the North Pole. The Earth's rotation doesn't carry it with it in any motion - so the distance it travels is 0. Assuming you live somewhere between the equator and the poles, to make the calculations easier, we generally take your 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 0.5 kilometers per second that the earth rotates on its own axis. In fact, since the speed of the Earth's rotation is so small compared to the speed at which it orbits the sun, we generally ignore it.

Currently, the entire solar system is revolving around the center of the Milky Way at a speed of 230 kilometers per second. For half the year, the Earth rotates in the same direction around the Sun as it rotates around the center of the Milky Way; but for the other half of the year, they are in the opposite direction—due to a cause called "countercurrent," and some At times we turn "downstream". When the earth rotates in the same direction around the center of the galaxy and around the sun, the total rotation speed of the earth 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, which equals 200 kilometers per second.

Therefore, in the above calculation process, we calculate the three factors together for the first time. Finally, we get the speed of the rotation of the Milky Way, which can actually be decomposed into the motion of the Milky Way in the local group of galaxies - the rotation speed of the 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 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!