Satellites can continue to orbit around the Earth without falling, because two powers – “gravity” and “centrifugal force” are keeping the balance. Gravity is the power that the Earth pulls satellites. Centrifugal force is the power that satellites tend to move away from the Earth by orbiting around it. Satellites are released from the rockets at the proper speed in a balance of gravity and centrifugal force, so they can keep orbiting around the Earth. However, strictly speaking satellites may be affected by frictional force caused by the Earth’s atmosphere depending on the difference of environment such as the altitude of satellites. As the frictional force increases, the altitude of the satellite will decrease little by little and fall into the Earth. Satellites are constantly monitored from the Earth so that they can maintain the determined orbit.
Satellites can continue to orbit around the Earth without falling, because two powers – “gravity” and “centrifugal force” are keeping the balance. Gravity is the power that the Earth pulls satellites.
Gravity—combined with the satellite's momentum from its launch into space—cause the satellite to go into orbit above Earth, instead of falling back down to the ground.
A satellite maintains its orbit by balancing two factors: its velocity (the speed it takes to travel in a straight line) and the gravitational pull that Earth has on it. A satellite orbiting closer to the Earth requires more velocity to resist the stronger gravitational pull.
Collisions usually don't happen because when a satellite is launched, it is placed into an orbit designed to avoid other satellites. But orbits can change over time, and the chances of a crash increase as more and more satellites are launched into space.
An orbiting spacecraft moves at the right speed so the curve of its fall matches the curve of Earth. Because of this, the spacecraft keeps falling toward the ground but never hits it.
Experts say it's extremely unlikely, but not entirely impossible, that a piece of space junk could fall out of the sky and hit someone. Objects larger than roughly 2 metric tons within Earth's orbit pose a little concern, but most objects would be controlled if and when they reentered the atmosphere, Frueh said.
All satellites will eventually fall back to Earth. Those in the graveyard orbit outside geosynchronous (more than 22,000 miles up) will take many thousands of years to do so, with those in nearer orbits or apogees requiring proportionately less time.
Yes it does! On average, a total of between 200-400 tracked objects enter Earth's atmosphere every year. That's about one every day! Thankfully human populations are rarely affected by things falling from the sky (from outer space).
Answer: The sun exerts a force that is of the same kind which the earth exerts on us(gravitational force) Similarly all the other planets do the same due to which they are able to repel against the force of attraction of the sun, this is also the reason why planets move around in an orbit.
Phone lines would be down and the internet would immediately shutoff. But one the most dangerous effects of our satellites falling to Earth would be GPS systems shutting down. Planes in the sky wouldn't be able to navigate without any air traffic control.
If the satellite is thrown out too slowly it will fall to Earth because the centripetal pull of gravity is too great. If the satellite is thrown out too fast it will escape from the Earth's orbit because the gravitational pull is not sufficient to provide the required centripetal force.
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