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Anonymous users2024-02-12When an object reaches a speed of one kilometer per second, it can break free from the gravitational pull of the Earth. In the process of getting rid of the shackles of the earth, under the action of the earth's gravity, it does not fly away from the earth in a straight line, but in a parabola.
Flight. After breaking away from the Earth's gravitational pull, it orbits the Sun under the action of the Sun's gravitational pull. To escape the gravitational pull of the Sun and fly out of the solar system, an object must move at a speed of 1,000 seconds. At that time it will be pressed hyperbola.
The trajectory flies away from the Earth, and it will fly away from the Sun in a parabola relative to the Sun.
Human space activities are not just about escaping the earth. In particular, the current application spacecraft needs to fly around the Earth, that is, let the spacecraft move in a circle. We know that there must always be one with centrifugal force.
Forces of equal magnitude and opposite directions act on the spacecraft. Here, we can take advantage of the gravitational pull of the Earth. This is because the gravitational pull of the earth on an object is exactly in the opposite direction of the centrifugal force in which the object moves in a curvilinear motion.
It has been calculated that when the speed of motion of an object on the ground reaches a kilometer second, the centrifugal force generated by it is equal to the gravitational pull of the earth on it. This velocity is known as the orbital velocity.
The speed at which the object moves in a circle around the Earth is known as the first cosmic velocity.
The speed at which the Earth flies away from the gravitational pull of the Earth is called the second cosmic velocity.
The speed at which the sun is free from the gravitational pull of the sun and flies out of the solar system is called the third cosmic velocity. According to the law of gravitation.
The magnitude of the gravitational force between two objects is inversely proportional to the square of their distance. Therefore, the distance of an object from the center of the earth is different, and its orbital velocity (first cosmic velocity) and separation velocity (second cosmic velocity) have different values.
The first cosmic velocity is kilometre-second, so that it can fly around orbit, the second cosmic velocity is kilometre-second, which can rush out of the earth, and the third cosmic velocity is kilometre-second, so that it can fly out of the solar system.
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Anonymous users2024-02-11It is possible to temporarily get away from flying, but it is not possible to do it temporarily.
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Anonymous users2024-02-10Leave in a spaceship.
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Anonymous users2024-02-09The Moon's perigee to Earth is 363,300 km, and the farthest apogee to Earth is 405,493 km. In other words, we are about 400,000 kilometers away from the earth, and we still have not escaped the gravitational pull of the earth. At a distance of 6,000,000 kilometers from the Earth, i.e. 6 million kilometers, an adult experiences a gravitational pull of 10 microns square seconds.
Taking the Earth's orbit around the Sun as an example, an object in space is subject to the gravitational pull of the Earth and the Sun, as well as the centrifugal force of its own motion. If the force of force on this object is directed towards the Earth, it is within the Hill sphere of the Earth, and it orbits around the Earth. If a person is stationary relative to the Earth, certainly not absolutely, and assumes to leave the Earth at an extremely slow (tending to zero) speed, then no matter how far away from the Earth is, that person cannot escape the Earth's gravity!
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Anonymous users2024-02-08The soul can be ascensed, and if you can't break through this shackle, it's because of the lack of spiritual energy on the earth, and you still need to work hard to cultivate.
Physical rise is also needed.
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Anonymous users2024-02-07Another habitable planet has not yet been found, and if it does, it is possible.
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Anonymous users2024-02-06When you find another planet suitable for human habitation, you can take the space shuttle to outer space.
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Anonymous users2024-02-05Theoretical studies have proven that due to physiological limitations, it is never possible for humans to use the strength of their muscles to support their weight in the air. Because the mass of man and the earth is so different, man is always bound by the strong gravitational pull of the earth and cannot leave the ground.
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Anonymous users2024-02-04You can dream, you have dreams to fly high, but you have to be able to daydream and daydream during the day to leave the earth, and if you leave at night, it is easy to collide with the stars!
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Anonymous users2024-02-03Unless you find a planet with a similar environment to the Earth and move to the past, the idea of leaving the Earth is impossible, and even if you leave for a short time, you will eventually come back, even if you choose to die, you will be on the Earth.
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Anonymous users2024-02-02My first instinct was to dream that I could leave the earth, so don't think too much about it and get some rest.
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Anonymous users2024-02-01Like Stephen Hawking, he may have left Earth and gone to some time and space that we don't know about. Maybe people will leave the earth when they die, but we don't know it.
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Anonymous users2024-01-31The development of scientific and technological power to the n power! Reach ......Another way: you can't go up the tree!
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Anonymous users2024-01-30Like Yang Liwei, they left the earth.
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Anonymous users2024-01-29Just jump up and leave the earth.
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Anonymous users2024-01-28Until one day it will be gone.
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Anonymous users2024-01-27Unfortunately, this is not possible now.
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Anonymous users2024-01-26Dreaming is okay, and it doesn't cost anything.
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Anonymous users2024-01-25The first plan is to develop several super spacecraft with a diameter of 10,000 kilometers and a height of 10,000 meters. Escape from Earth.
The second option is to transform the moon into a superspacecraft.
The third option is to build a super maglev train, the track follows the Earth's equator for one circle, and when the train accelerates to the second cosmic speed, the train separates from the track and the train flies into space.
The fourth plan is to build a giant centrifugal rotation station, which is connected to the spaceship, and when the rotation station rotates, the spacecraft moves in a circle. When the spacecraft reaches a certain speed, the two separate. The spaceship flies into space.
The fifth plan is to build a giant Babel Tower with a diameter of 1,000 meters, and the bottom of the Babel Tower is an air pressure inflatable group, which first evacuates the air of the Babel Tower, and finally increases the air pressure to send the spaceship into space.
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It should be able to survive, but so far I haven't found a living environment similar to the earth! The universe is big and limitless, and the earth is just a drop in the ocean! After the continuous exploration of human beings, we will definitely find the corresponding living environment! Whether it's Jupiter. >>>More