human
How many planets orbit the sun?
assistant
There are 8 planets that orbit the sun. The first planet to be discovered was Mercury, and it is the closest planet to the sun. The next planet to be discovered was Venus, which is the second closest planet to the sun. The third planet to be discovered was Mars, and it is the third closest planet to the sun. The fourth planet to be discovered was Jupiter, which is the fifth closest planet to the sun. The fifth planet to be discovered was Saturn, which is the sixth closest planet to the sun. The seventh planet to be discovered was Uranus, which is the seventh closest planet to the sun. The eighth planet to be discovered was Neptune, which is the eighth closest planet to the sun.