Nobody knows. Probably a lot. We don't even know how many there are in the solar system, let alone the rest of the universe.
0 is the answer
5
none
1is the answer
Venus has no natural satellites.
There are 27 satellites on Saturn!!!!
There r many satellites in space. there are 7
yes
by satillites.
This is interesting. Now they may have found us the way we are looking for them. We are looking for waves. Anything tecnilogical will release waves. under a certain kind of lense, these things appear bright. Now if aliens used this, they would be able to see earth. Or, maybe they send out satillites like we do. A theory is that some UFO's seen in space are satillites from extraterrestrials.
Saturn
No it cannot.