It depends upon the purpose of sattalite
Phobos is 48,340,000 miles from the planet Earth. Phobos is one of two satellites of Mars and was first discovered in 1877.
72 + 35 (foreign) satellites were put into orbit so far (till November 2013).
You can see satellites orbiting. If you go on a clear night to somewhere which is far from city lights, you will sometimes see dots moving across the sky - these are satellites reflecting sunlight.
62 satellites so far and recently rishant 1 of pslv 19 has been launched on 26 April 2012
Far
for giving information to places on earth that is far far away.
no, mercury and venus are the only two planets that do not have moons.
Phobos is 48,340,000 miles from the planet Earth. Phobos is one of two satellites of Mars and was first discovered in 1877.
Navigation. The Global Positioning System (GPS) provides location and time information for anywhere on the Earth via a series of satellites in geostationary orbits. The time it takes for the driver/pilot to send a signal to the satellites and receive it back again can be used to work out how far away you are from the satellites, which is used to work out where you are.
If they were too far out, then they would not be very useful as weather satellites, because they would orbit too slowly, and they would be too far away to make out the weather.
In a sense they are continually falling to Earth, but they are so far away that the curve of their fall is big enough to follow the circumference of the Earth.
Old satellites orbiting near the Earth eventually fall back into the atmosphere and burn. Satellites orbiting farther away stay in orbit indefinitely.
Artificial satellites come from all over the world. Each country send their own satellites into space.
There are about 4 that go for one and the four share many. The four gives you an exact location. I am not sure how far away however
The moon, at an average distance of 238,860 miles.
72 + 35 (foreign) satellites were put into orbit so far (till November 2013).
Far, far away is a saying that means something is literally far away.