Only earth has got one natural satellite - The Moon.
earth
Mercury and Venus have no known satellites, all other planets have at least one.
The only planets without moons are Mercury and Venus, the planets closest to the sun.
No, not all planets have satellites. For example, Mercury and Venus do not have any natural satellites, while Jupiter and Saturn have numerous moons. Earth has one natural satellite, the Moon.
Mercury and Venus. All other planets have at least one moon (or natural satellite).
So far, we know that Mercury and Venus do not have natural satellites, while the Earth, Mars, Jupiter, Saturn Uranus and Neptune do have natural moons. If we include artificial (man-made) satellites, then Venus has some as well. Of the extra-solar planets (planets that orbit other stars) we do not yet know of any moons. But it would be impossible for our current technology to detect the moons of planets so far away. Give us a few more years, and we may be able to answer those questions.
Earth is the third planet from the Sun. It is one of the terrestrial planets and has one satellite, the Moon.
The Moon is the only natural satellite of the Earth.
The Moon (not surprisingly) is just a moon. It's a "natural satellite" of the Earth. It is not a planet.
No, neither Venus nor Mercury have any moons.
Yes, all planets in our solar system (except for Venus and Mercury) have at least one satellite - the gas planets are noted for often having more than 10. Earth is the only one to have artificial satelites remaining around it for great lengths of time, though.
It is called a satellite. Earth has one of them, other planets many more.