The earth weighs 600 trillion tons. Why doesn't it fall down and is still floating in the universe?

The earth is the home of human beings. Human beings were born millions of years ago. According to scientists' speculation, human beings evolved from apes. Because there were many ferocious creatures on the earth at that time, apes chose to live in groups in order to survive. This increased communication between organisms, and communication can make the brain more and more developed!

Later, apes invented fire. The emergence of fire allowed apes to truly move towards civilization. Fire can cook food. Cooked food has high nutritional value and can promote brain development faster, so apes evolved into humans within millions of years.

Human beings are the most intelligent life on Earth. After leaving the Earth, humans discovered that the Earth is a planet. In the solar system, the mass of the Earth is not the largest. The Earth is rotating every moment, and it takes one day to rotate once. While rotating, it is also revolving around the sun, and it takes one year to revolve once. According to scientists' exploration of the Earth, our Earth has a diameter of approximately 12,742 kilometers and weighs 600 trillion tons. Speaking of this, many friends may be curious. How did humans calculate that the Earth is so heavy?

If you want to weigh the earth directly, it is impossible. However, the emergence of Newton gave mankind hope. In 1687, Newton proposed the law of universal gravitation.

According to his theory, any material with mass on Earth will be affected by gravity. If the gravitational constant can be calculated, then the weight of the Earth can be known.

So in 1798, Cavendish designed a very accurate torsion balance that could display the gravitational force between two lead balls. He then calculated the gravitational constant, and through it he successfully calculated the weight of the earth. Later, this experiment was also called the "weighing the earth" experiment. Since the earth is so heavy, why can the earth float in the universe without falling?

We know that all celestial bodies in the universe are floating in the universe. According to scientists' speculation, the earth can float in the universe because of the influence of the sun's gravity. Since the sun has the largest mass in the solar system, the gravity generated by the sun is very large, which makes the earth close to the sun. The rotation of the earth can generate centrifugal force, so that the earth can stably rotate around the sun without being swallowed by the sun. Therefore, many scientists believe that the earth can float in the universe because of the influence of gravity.

In addition, scientists believe that there is a mysterious substance in the universe, which is called dark matter. Dark matter is an invisible substance.

It does not react with any matter. Dark matter can release dark energy. This energy is very powerful and can support the movement of celestial bodies in the universe. It can be said that the operation of the entire universe is operated by dark energy behind the scenes. According to scientists' speculation, visible matter in the universe only accounts for 5% of the total mass of the universe, and dark matter accounts for 95% of the total mass of the universe. Dark matter is like water, with strong buoyancy, which can float celestial bodies in the air. Scientists are currently actively looking for dark matter, but due to the limitations of human technology, humans have not discovered dark matter so far.

In addition to gravity and dark matter, the great physicist Einstein believed that celestial bodies are not floating in the universe. He believed that the universe is a huge membrane, but we cannot see this membrane. The celestial bodies in the universe are all on this membrane. The reason why the earth revolves around the sun is that the celestial bodies with large mass can bend the cosmic membrane, so the celestial bodies with small mass will revolve around the celestial bodies with large mass. According to Einstein's theory, there is no saying that celestial bodies float in the air. It's just that scientists don't have an accurate answer to how this cosmic membrane was formed. It may have been produced after the Big Bang.

There are many theories about celestial bodies floating in the universe. Due to the limited technology of human beings, we can only orbit the earth after flying out of the earth. If our spacecraft can fly up or down, then it can be proved whether the celestial body is floating in the air. At present, the universe is a plane, and all celestial bodies are basically on the same plane. What puzzles humans the most is why celestial bodies in the universe can move regularly. Is it really just because of gravity? In addition to gravity, what other secrets are hidden in the universe, or who carefully designed the universe?

Source: Mysteries of the Universe