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How does the Space Station stay put in orbit?
I believe the Space station is stationary above the earth but How does it stay there and how did they build it?
How does it stay in orbit then?
9 Answers
- cyswxmanLv 71 decade agoFavorite Answer
The International Space Station (ISS) is not stationary, but is in orbit around the Earth, making one orbit about every hour and a half. It's forward speed almost perfectly balances the gravitational pull of the Earth downward with the centripetal force outward. Occasionally the ISS must be given a small boost in altitude because at it's normal altitude there is still a very thin, tenuous part of our atmosphere, which acts to slightly brake the forward speed of the ISS, causing it to very slowly descend. If this descent was to go unchecked, then the ISS would eventually re-enter the atmosphere and break up/burn up.
- Anonymous5 years ago
This has been done ,space station orbit the moon , when they made landing on the moon ,there was space station, For the gravity , there is different ways to create it , Electromagnetic attraction is example of that.
- GothikaLv 41 decade ago
Orbit is when an object falls around the Earth. Think about this with a tennis ball. If you lightly toss a tennis ball toward the horizon, it will follow a curved path toward the ground. Now throw the tennis ball as hard as you can. Just like before, a curved path, but this time the path is much larger. The faster you throw it, the larger that curved path becomes. Now let's throw it really, really fast, as in several miles per second, that curved path will be so large, that it will actually go around Earth. This is orbit. The International Space Station is falling around the Earth.
However the ISS isn't so high up that the atmosphere is unnoticable. There is still extremely tenuous amounts of gas up there, and as the ISS moves through it, it slows down (air resistence). This causes the orbit to decay, the ISS's orbit moves closer to Earth. If this keeps going, ISS would be destroyed, but periodically, cargo ships boost the orbit of the ISS by using thrusters to speed it up.
How was it built? Basically, at the turn of the century, Russia launched the Zarya module, which is basically the cargo hold of the ISS. You can just think of Zarya as a regular satellite. Later, the United States launched a shuttle carrying our Unity module. The shuttle went to Zarya, and attached Unity onto Zarya. Now, it's basically two satellites joined together.
And so on... basically, all of the parts of the ISS have been launched seperately and assembled in space.
- Jason TLv 71 decade ago
It stays in orbit the same way every other oribiting satellite does.
If you throw a ball, it follows a curved path forward and down towards the ground. If you throw it harder it travels faster and further, but still follows a curved path down to the ground. The fester you set something moving the further it travels as it curves down. Since the Earth is not flat, if you throw it fast enough the downward curve caused by gravity matches the curve of the Earth's surface away from the object, so it just keeps going round the Earth. That's an orbit, and for Earth it happens that if you can achieve a speed of 17,500mph that is the required speed to ensure your forward motion is sufficient that the curve of the Earth keeps you from ever hitting it.
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- tsr21Lv 61 decade ago
It's in orbit. It's speed away from the earth is exactly balanced by the force of gravity drawing it in. Because they are balanced, it stays at the same height - that is what is meant by "being in orbit".
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- 1 decade ago
It's actually a simplexicated senario. If something moves around Earth, or any other cellestial body, faster than it rotates, by the time gravity from one part of the body affects it, it has already moved to another part to be affected by it. Meaning gravity is perpetually pulling the satellite by centrifugal force, kinda like when you swing a bucket of water in a ferris wheel motion, the gravity pulls the water down, yet it is moving fast enough to remain in the bucket.
- Anonymous1 decade ago
it stays in place because it's speed is such that it can not escape Earth's gravity, but Earth's gravity can not pull it any closer.
It was built over many years by bringing up sections and connecting them.