Yes, they appear as slowly moving stars in the night sky.
The five major types of artificial satellites are: research, communications, weather, navigational, and applications. Please see the related links.
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.
satellites
yes, with satellites that is how they get proof
There are satellite tracking feeds available to show the current position of satellites in 3-D on Google Earth. See related links below for details.
Yes, it is possible to see satellites from the ground with the naked eye. Satellites are typically visible during the early morning or evening hours when the sun's light reflects off them. They appear as moving points of light in the night sky.
Satellites have done a lot of things. We can now use GPS to not get lost. We can see places we normally would never go.
We do not HAVE to use satellites. You can look up and see the sun or stars - depending on the time of day - using only your eyes.
the brightest and the sixth biggest planet
See the link for a table of moons in the solar system.
they use satellites to see if there is high or low pressure.
Stars The Moon The sun Galaxies Nebulae Satellites