Stay above the same place on Earth "forever" ... thus they stay in the same place in our sky.
They do many things; for instance, some of them are used for communications.
They orbit the earth in a way that they remain above the same point.
No, because rings are not satellites, but the moons are satellites.
Mercury has no satellites.
There are no known satellites of Mercury.
Mercury has no satellites.
Communication satellites orbit around the Earth.Communication satellites orbit around the Earth.Communication satellites orbit around the Earth.Communication satellites orbit around the Earth.
It has 3 satellites!
Satellites that are controled by someone
Triangulation of satellites requires three satellites that bank of one another simultaneously.
Elliptical satellites don't have a constant speed, but circular satellites do
Satellites, can either be natural satellites (for example; Earth's moon), or man made satellites (for example; communication satellites).
Super has been to natural satellites but hasn't been to artificial satellites
Yes, if you are talking about natural satellites. Artificial satellites (spacecraft) are not moons.