The Earth is constantly rotating and revolving around the Sun, but the movement is so smooth and synchronized that the human body does not notice it.
The Earth never stands still, it moves in two main ways. First, the Earth rotates on its imaginary axis that runs from the North Pole to the South Pole. Every day, our planet completes one rotation, at a speed of about 1,670 km/h at the equator. At the same time, the Earth is also orbiting the Sun, taking a year to complete one orbit, at an average speed of 107,000 km/h.
These numbers are faster than anything humans have ever built. So why aren't we getting dizzy or thrown off the planet?
Smooth and synchronized movement
Our bodies only perceive motion when there is a sudden acceleration, deceleration, or change of direction, such as when riding a roller coaster or sitting on a merry-go-round at an amusement park. But the Earth’s motion is incredibly steady, having continued for billions of years without a single jerk or sudden stop.
Imagine you are sitting in an airplane that has reached a steady altitude. Even though you are flying at hundreds of miles per hour, you feel at peace, even forgetting that you are moving. This is because you and everything around you are moving with the plane.
Likewise, you, the chair, the trees, the ocean… all move with the Earth so there is nothing for the body to perceive the difference.
The earth is too big, and we are too small
Another reason is scale. Imagine a tiny ant crawling on a giant ball. Because of its size, it wouldn’t be able to feel the ball rotating. Neither would we: the Earth is nearly 13,000km in diameter, so any movement is too “smooth” for humans to perceive.
Furthermore, in space, there are no familiar “landmarks” like trees or roadside poles to compare to. The stars are so far away, they appear stationary, making it difficult to realize that we are flying at tens of thousands of kilometers per hour.
And of course, gravity is the force that keeps us from being flung into space, an invisible but eternal "hug" from Earth.
What is the evidence that the Earth is moving?
Although they could not feel it, people very early realized that the Earth was moving by observing the sky.
Day and night: The sun rises and sets because the Earth rotates on its axis in 24 hours.
Seasons of the year: The tilt of the Earth's rotation axis creates differences in sunlight, giving rise to summer, winter, spring, and fall.
Starry sky: The constellations appear to move nightly and change position with the seasons, as the Earth rotates and revolves around the Sun.
Today, satellites and telescopes have confirmed what ancient astronomers once suspected: The Earth is constantly moving.
The truth is that no object in the universe stands still. The sun rotates on its own axis and, together with the solar system, revolves around the center of the Milky Way at a speed of hundreds of thousands of kilometers per hour. Galaxies continue to drift in the infinite space.
So, even though we don't feel it, everything around us is always in an endless journey of motion.
Source: https://tuoitre.vn/trai-dat-lao-vun-vut-107-000-km-h-ma-ta-khong-cam-thay-gi-vi-sao-20250922225843055.htm
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