Because the Greeks and Romans themselves gave mythological names to these bodies. It's been continued as a tradition.
Aphrodite is named after Venus and I think that is it
The planet Neptune is named after the Roman god of the sea.
The planet named after the Roman goddess of love is Venus.
There is no planet named after the Greek god of war.There is however a planet named after the Roman god of war, which is Mars.The Greek god of war is Ares. He does not currently have a planet named after him.
There is no planet in how solar system that is named after Artemis or her Roman counterpart, Diana.
The planet Saturn is named after the Roman god of agriculture and time, Saturn. The planet's rings were also named after him.
the planets were named after the roman gods. Venus was named after roman goddess's.
There is a small planet named Ceres, the Roman version of Demeter.
The planet Neptune is named after the Roman god of the seas and oceans.
The ancient Roman people named the planet Venus. The planet was named after the goddess of the same name.
Saturn is named after Saturn, the Roman god of agriculture.
Planet Saturn was named after the Roman god of agriculture, Saturn.