mercury is the fastest
Mercury is the fastest.
It depends what you are referring to. No planet is known as the fastest. Planets rotate at different speeds, their orbits take different amounts of time.
Mercury in 88 days.
Mercury with a mean orbital speed of 47.87 km/s
Curiously, the nearer the planet is to the Sun the faster it orbits. Thus Mercury orbits the fastest, whereas Neptune is the slowest.
If you mean faster than the Earth, then the planets Mercury and Venus orbit faster. This is because they are closer to the sun.
Mercury is the planet in our solar system that orbits the sun at an average speed of about 170,500 kilometers per hour (at its fastest point).
Mercury is the planet that orbits closest to the Sun in our solar system. It is the smallest and fastest-moving planet, with a year that lasts only 88 Earth days.
Mercury is the fastest planet in the solar system. It orbits the sun in only 88 days. This means a year on Mercury is 88 days long.
The fastest moving planet in out solar system is Mercury, which is named after the roman god of speed.
Mercury. It is the closest planet to the sun and so orbits at the fastest speed and in the shortest time, just 88 days. Venus also has no moons and orbits very quickly, since it is only the second planet out. Not as quickly as mercury though.