every 92. mins.
92 mins is the time it takes to complete one full orbit. The Orbital speed is calculated using the ISS's centripetal acceleration. The ISS orbits earth at approx. 400 km about the surface of the earth. at a radius of approx. 6.771x10^6 meters. The force the ISS experiences at that altitude is approx. 8.69 m/s^2 (a=GM/r^2), about 12% less force than 9.8m/s^2 experienced on the earths surface. Not too much difference; the only thing keeping it from falling is it's horizontal or orbit velocity. At 8.69 m/s^2, and if a=v^2/r (its centripetal acceleration, orbit velocity, and radius of orbit), The ISS's orbit velocity is 7670.7 m/s or 7.67 km/s. That is ridiculously fast; approximately Mach 17.3!!! - but it is essentially in a vacuum so you couldn't hear the sonic boom.
Once a shuttle boost's enough to gain that speed to dock, it has to enter and smash into the earths atmosphere at that speed, relying on air friction to slow it down.
The reason the ISS is a 'zero gravity' environment, is because it is constantly in a 'free fall' state, accelerating to the earths center at 8.69 m/s^2.
the iss orbit is an orbit which goes around the earth giving satalight signals
This is because of the Gravitational pull of the earth.
40,000 miles
The ISS is in Low Earth Orbit and can be tracked by several sites on the internet. See related link
I think the LEO (Low Earth Orbit) is economical than higher Earth Orbit for the ISS. The rocket is able to send heavier spacecraft to LEO. But spacecraft in LEO is sinking because of air drag. The ISS has to boost the orbit from time to time (for example several weeks ). The air drag is smaller in higher Earth Orbit.
the iss orbit is an orbit which goes around the earth giving satalight signals
This is because of the Gravitational pull of the earth.
ISS is an internationally developed research facility, which is being assembled in low Earth orbit.
40,000 miles
The ISS is in Low Earth Orbit and can be tracked by several sites on the internet. See related link
I think the LEO (Low Earth Orbit) is economical than higher Earth Orbit for the ISS. The rocket is able to send heavier spacecraft to LEO. But spacecraft in LEO is sinking because of air drag. The ISS has to boost the orbit from time to time (for example several weeks ). The air drag is smaller in higher Earth Orbit.
The planets do not orbit the Earth, they orbit the sun.
Earth's gravitational attraction keeps changing the direction of its movement continuously. This keeps orbits near Earth - such as the ISS - in an elliptical orbit.
Depending on where the station is in its elliptical orbit around earth, it is between 190 and 192 nautical miles from earth.
The shuttle never leaves Earth orbit, it simply goes into orbit and then returns. Moving to a higher orbit requires additional speed and manuevering, as when visiting the ISS.
The spaceshuttle Columbia was orbiting the earth in a low earth orbit. Because its mission was not to the International Space Station (Columbia never went to the ISS on a docking mission) it was lower than most, which would have excluded a rescue scenario involving the ISS. Columbia did not have sufficient fuel to boost to the height of the ISS.
The ISS orbits at an altitude of 400 km (250 miles) above Earth.