Why doesn t satellite junk float out or fall to Earth?

Because the earth has a certain gravitational pull on him, this gravitational force provides a centripetal force, so that the garbage moves in a circle around the earth, because the space resistance is extremely small, so his energy consumption is extremely slow, and after a little less energy, it will reduce its radius of motion, so as to orbit a little smaller than the original, until the energy is exhausted, it will fall to the earth.

They are also satellites, so they can fly in space for a long time.

But space junk in low orbit can also fall. Because the resistance of the air in lower orbits is still relatively large, in general, space junk can probably operate in low orbit for a few months to several years. It's hard to fall off the high-orbit ones.

Space junk will also collide with each other, but the result of the collision can only be more and more fragmented, and finally countless debris will fly everywhere in the sky.

Satellite junk, like unpowered satellites, moves in an elliptical or circular trajectory around the Earth. This trajectory is determined by its velocity and the angle of the initial motion. In order for satellite junk to float out, it must have enough velocity (energy) to overcome the Earth's gravitational pull; To fall to the ground, or to have too low a velocity (there is a minimum value), or to enter the atmosphere and burn.

The gravitational force is canceled out by the force of space to become a satellite.

Because the earth has an attraction to garbage. And the garbage is only affected by this force. But because the garbage leaves the satellite, it already has the same speed as the satellite. So due to inertia. Garbage still has to keep its original trajectory and continue to circle the earth

It is offset by the gravitational pull of the Earth and the centrifugal force caused by its circular motion around the Earth.

Summary. Hello! Can fly. Won't fall off mainly because:

1. The ability of satellites to orbit around the earth is itself affected by gravity.

2. Whether the satellite can fall depends on its speed. There are three cosmic velocities. The first cosmic velocity is called orbital velocity, which is kilometers and seconds, which means that if an object moves at this speed, it can orbit the earth without falling back to the ground.

The second cosmic velocity is called the detachment velocity, which is kilometers and seconds, which means that when the speed of an object reaches or exceeds this value, it can get rid of the gravitational pull of the earth and fly away from the earth to become an artificial planet.

Artificial satellites launched into space do not fly away from the Earth because the speed of the satellite is between the first cosmic velocity and the second cosmic velocity, so that the satellite will neither fall back to the ground nor fly away from the Earth.

Will satellites fly, and why won't they break away from Earth?

Hello! Can fly. Won't fall off mainly because:

1. The ability of satellites to orbit around the earth is itself affected by gravity. 2. Whether the satellite can fall depends on its speed. There are three cosmic velocity bends.

The first cosmic velocity is called orbital velocity, which is kilometers and seconds, which means that if an object moves at this speed, it can orbit the earth without falling back to the ground. The second cosmic velocity is called the detachment velocity, which is kilometers and seconds, which means that when the speed of an object reaches or exceeds this value, it can get rid of the gravitational pull of the earth and fly away from the earth to become an artificial planet. Artificial satellites launched into space do not fly away from the Earth because the speed of the satellite is between the first cosmic velocity and the second cosmic velocity, so that the satellite will neither fall back to the ground nor fly away from the Earth.

The hall was demolished. Hope it helps

Do satellites have moving wings?

No wings (>

How did the satellite get into the sky? Why won't it fall?

Satellites are launched.

The main reasons why it will not fall off are as follows: 1. The satellite can circle around the earth's orbit, which is itself affected by the gravitational force of the world. 2. Whether the satellite can fall depends on its speed.

There are three cosmic velocities. The first cosmic velocity is called orbital velocity, which is kilometers and seconds, which means that if an object moves at this speed, it can orbit the earth without falling back to the ground. The second cosmic velocity is called the detachment velocity, which is kilometers and seconds, which means that when the speed of an object reaches or exceeds this value, it can get rid of the gravitational pull of the earth and fly away from the earth to become an artificial planet.

Artificial satellites launched into space will not fly away from the Earth because the speed of the satellite is between the first cosmic velocity and the second cosmic velocity, so that the satellite will neither fall back to the ground nor fly off the ground.

Do satellites revolve around the Earth? Is it from west to east like the sun?

Generally, the rotation direction is the same as that of the earth, because in this way, the satellite can use a part of the linear speed of the earth's rotation to save energy.

Who is faster in satellite or earth?

Geosynchronous satellites are faster! (The orbital radius of a geostationary satellite is about 6 times that of the Earth).

1. According to the principle of physics, when the object is in a circular hood and moving in a positive circle, a centrifugal force will be generated, and the magnitude of the centrifugal shed spike force is proportional to the square of the rotational speed. Therefore, the greater the speed, the stronger the centrifugal force, when the centrifugal force and gravity are balanced, the object can rotate around the earth non-stop, and the flight speed of the artificial satellite must be large enough to balance the gravitational force, so that it can fly without stopping.

2. Among the commonly used satellite orbits, there is the so-called geosynchronous or sun-synchronous, which means that a certain parameter of the satellite orbit is the same as that of the earth or the sun. If the satellite orbits the Earth as fast as the Earth's rotation, the satellite does not move from the ground, and this satellite orbit is called a geosynchronous orbit. If the orbital surface of a satellite changes as fast as the Earth's revolution, the angle between the orbital plane of the satellite and the Sun is approximately unchanged, and this satellite orbit is called a sun-synchronous orbit.

Therefore, geosynchronous orbit is the pursuit of the earth by satellites; The sun-synchronous orbit is not a satellite chasing the sun, but an orbital plane chasing the sun. Communication satellites require satellite land chasing; Telemetry satellites require orbital planes to chase the sun, allowing the satellite to perform telemetry under the same sunlight.

Satellites that run out of fuel are called obsolete satellites, and such satellites will not be controlled by humans, and will be artificially guided to drop them into the Pacific satellite graveyard.

Generally, the following treatments are done when the fuel is exhausted:

1. Become space junk and fly freely;

2. Artificially guided to a safe track;

3. Artificially guided fall into the Pacific Ocean (satellite graves);

4. Free fall.

The role of satellites:

Natural satellites are naturally formed in the universe, and it is difficult to say what they do. Of course, the moon is the natural satellite of the earth, it can balance the rotation of the earth, stabilize the earth's axis, control the tides, can be used to observe time, etc., and can also imagine many beautiful legends.

Artificial satellites are widely used, some are equipped with photographic equipment, and are used to take pictures of the ground, reconnoitre, investigate resources, monitor the earth's climate and pollution, etc.;

Some are equipped with astronomical observation equipment for astronomical observations; Some are equipped with communication relay equipment, which are used to relay radio, television, data communication, ** and other communication signals; Some are equipped with scientific research equipment, which can be used for scientific research and special production under the condition of no gravity in space.

Artificial Earth satellites orbit the Earth at a speed of kilometers and seconds. The motion of the satellite is equivalent to the motion of a flat-thrown object with an initial velocity of kilometers and seconds, that is, in one second, the satellite "horizontally" travels through kilometers parallel to the earth's surface, and at the same time "freely falls" meters according to the law of free fall motion. Due to the rotation of the Earth, the ground also "bends" meters in a second.

The satellite keeps falling down, the earth's surface keeps bending, and the satellite keeps a certain distance from the ground so that the satellite never falls to the ground. Such satellites are essentially "falling bodies", and the falling route is a circle. When the velocity of the satellite is greater than kilometers and seconds, the orbit is an ellipse, and the Earth is located on one of the focal points of the ellipse.

On the one hand, the satellite is affected by the gravitational pull of the earth, forcing it to fall to the earth; On the other hand, due to its certain velocity, there is a centrifugal effect that overcomes the gravitational pull of the earth. The effect of these two actions forces the satellite to fly elliptically around the Earth. The key here is speed.

The speed of the satellite is less than kilometers and seconds, and it falls; When the speed is equal to and greater than kilometers and seconds, it is free from the influence of the Earth and travels into space.

Satellite is a modern term that refers to a natural celestial body that orbits a planet and orbits periodically in a closed orbit, and an artificial satellite can also be called a satellite. An artificial satelliteAn unmanned spacecraft that orbits the Earth in orbit (at least once). Artificial satellites basically orbit the earth according to the laws of celestial mechanics, but the actual motion is very complicated due to the influence of the non-spherical earth's gravitational field, atmospheric drag, solar gravity, moon gravity and light pressure in different orbits.

Artificial satellites are the most numerous, most versatile, and fastest-growing spacecraft launched. The number of satellites launched accounts for more than 90 per cent of the total number of spacecraft launched.