Mercury
There is only one main force acting on a satellite when it is in orbit, and that is the gravitational force.
A planet is an object that orbits a star, has enough gravity to make itself mostly round, and has cleared other objects out of its orbit. A satellite is an object that orbits another object that is itself orbiting a star. The object may be a planet, dwarf planet, asteroid, or comet.
Venus is unique in that it and Mercury are the only planets in the solar system with no natural satellites. Currently the European Space Agency (ESA) has a satellite named Venus Express orbiting the planet.
The moon is the earths only natural satellite
Earth is the only (non-dwarf) planet that has exactly one natural satellite: the Moon.
Earth.
Saturn. Titan is the only satellite known to have atmosphere.
The moon is the (only) "natural satellite" of the earth. It is not a planet.
We have assigned names of things obviously. Planet is the name for those which goes around the sun. And satellite is the one which goes around the planet. So earth is a planet and not considered as satellite. Moon is the natural satellite to our earth.
planet ?
Because it only orbits around our planet.
Earth is the third planet from the Sun. It is one of the terrestrial planets and has one satellite, the Moon.
The only planet walked on by people (humans) is the Earth. The only other astronomic body that humans have walked on , is our natural satellite the Moon.
The Satellite Atlas orbits the planet Saturn.
Oberon is a moon/satellite of the planet Uranus.
you can see a shadow on the planet and its so cool