Mercury has no satellites.
There are no known satellites of Mercury.
Mercury has no satellites.
Mercury has no natural satellites.
Mercury does not have any natural satellites. However, it has been visited by two space probes: Mariner 10 in 1974-75 and Messenger in 2011. These are the two spacecraft that have provided most of the information we have about Mercury.
No natural satellites of Mercury have been discovered.
The planet Mercury has no natural satellites.
Mercury has no natural nor artificial satellites.
No natural satellites of the planets Mercury or Venus have ever been discovered.
Mercury does not have any moons. It is one of the few planets in our solar system that does not have any natural satellites or moons orbiting around it.
Mercury and Venus do not have any natural satellites (Moons).
No natural satellites have been discovered in orbit around Mercury. Planetary scientists are by now quite firmly convinced that the planet has no moons.