Under what circumstances will space junk crash

Very close to Earth, it will shoot into the ground when captured by Earth's gravitational pull (if it is too large to burn up completely in the atmosphere, of course).

It depends on how fast the space junk runs. If it has a very high speed around the earth, it will continue to rotate around the earth and will not fall off until the friction slows it down. There is almost a vacuum in space, and there is very little friction.

A space vehicle will orbit the Earth for 25 or 30 years if it flies at an altitude of 600 km, 4001 if it is at an altitude of 1000 km, and almost forever if it is higher. Nowadays, there are more and more such "longevity" garbage in space, and it will be extremely difficult to remove it. Reference.

There is a gravitational pull between objects, and space junk falls when it reaches the atmosphere due to the gravitational pull of the Earth.

What happens if trash is thrown into space? After reading it, I have mixed feelings!

Aerial garbage, usually small, is completely vaporized by friction as it passes through the atmosphere to reach Earth, leaving little to the ground. Space junk is usually small, with hundreds returning to Earth as they fall over the years: man-made junk from space returns to Earth every few days, but we hardly feel it.

As the number of satellites increases, the lost satellites also drop empty debris. In fact, a large amount of space junk enters the atmosphere every year.

Usually the small ones burn up in the atmosphere. In general, space junk is something that can circle the Earth but is useless, and a lot of it enters the atmosphere every year. Usually small enough to burn up in the atmosphere.

Space junk is very harmful to the normal use of satellite space stations. An oncoming wrench is like. This is not the first time that space junk has entered the Earth to form a huge fireball, and there are many such incidents, such as in Murcia, Spain, in November 2015, according to the Daily Mail.

Usually, space junk close to the Earth moves in a circular motion around the Earth, which is equivalent to a satellite of the Earth. If debris from outer space enters the Earth's atmosphere, it will be heated by air friction and burned into ashes. Space junk also collides with each other, but the result is more and more fragmented, and finally countless pieces of debris fly into the sky.

They are actually a kind of artificial satellite, so they can fly in space for a long time. But at low altitudes. Empty garbage doesn't fall.

It will float in space all the time, like a satellite on Earth, with its own orbit and revolving around the Earth. This is a pollution of the space around the Earth, because garbage cannot fall on the Earth after all, because they are affected by the gravitational pull of the Earth, move around the Earth, and as long as there are no other objects blocking their movement, they will not fall on the Earth. Instead of falling to the surface and causing a lot of damage, the debris burns up in the atmosphere before reaching the surface.

However, collisions produce a lot of dust. When they are illuminated by sunlight and reflect the sunlight.

Space junk does not fall to Earth on its own, because space junk is still far from the atmosphere and has been rotating around the Earth.

Space junk does not fall on Earth on its own, there is no air in space, and there is no gravity.

Space junk usually burns up in the atmosphere, but some of it falls to Earth, and every year some space junk falls into Earth.

Space junk will fall. In fact, a lot of space junk enters the atmosphere every year. Generally, the small ones burned up in the atmosphere.

In general, space junk refers to man-made objects that are capable of orbiting the Earth, but are of no use. Currently, more than 400 pieces of space junk fall to Earth every year.

Space junk is very harmful to satellites and space stations that are in normal use. A wrench is the power of a grenade. It is also potentially dangerous to the ground.

Satellites or space junk rely on gravitational force to circle the sky at high speed, and the thin atmosphere of outer space or other factors will slow down the object, reduce the centrifugal force, and then the object will get closer and closer to the earth, and eventually burn up or crash into the sea.

The reason why human-controlled vehicles such as satellites do not fall off is because they have their own small engines, which replenish their speed from time to time to get them back to their original orbits.

It's not because of the loss of gravity, gravity is everywhere, it's just that the farther away you are, the smaller the gravitational pull, and weightlessness is just an "illusion". Gravitational forces make you do other motions instead of falling, and space is weightless because of leaving the gravitational pull of the Earth. If you look at the formula for calculating gravitational force, you will naturally know (if the distance is too large, the gravitational force will be small).

There is no gravitational pull. So it will be weightless. There is basically no gravitational field outside the earth's atmosphere, so people can't feel gravity in space, but the total moving of the universe is just not felt! Without gravity, weightless?

The definition of weightlessness is a phenomenon in which the pressure of an object on a support is less than the gravitational force experienced by the object. If you think about it carefully, you will find that this definition sets a premise for the phenomenon of weightlessness, that is, the existence of a gravitational field. Without a gravitational field, there is no gravity, and there is no weightlessness.

In other words, according to this definition, weightlessness occurs only within the gravitational pull of celestial bodies.

For space without a gravitational field (which is negligible or equilibrium with centrifugal acceleration, it is all included in the absence of a gravitational field), there is no weightlessness according to the above definition due to the absence of gravity. The state of gravity in space, on the other hand, is also customarily called weightlessness because it feels similar to weightlessness.

The state of "weightlessness" in space is a state of detachment from the force field, or the state of complete absence of gravity. This is known from the situation of the astronaut levitating on the spacecraft.

Weightlessness is not the loss of gravity, but people in space have to make a circular motion around the earth, and the circular motion requires a centripetal force, and this centripetal force is provided by the gravitational force (gravity) of the earth on people. In other words, the gravitational force exerted on man in space is used to maintain man's circular motion around the earth.

In fact, when the spacecraft flies in space, it will still be affected by some and its thin atmosphere, so it is only doing an approximate flat throwing motion (which is the superposition of approximate uniform linear motion and approximate free fall), so the spacecraft is not completely weightless, but in a state of microgravity.