Which planet in the solar system is named after the Roman messenger to the gods?

The planet Mercury is named after the Roman messenger to the gods. His Greek counterpart is Hermes. In mythology, Mercury is the son of Zeus and Maia, whom Zeus had to put to work as a messenger to curb his tendency to indulge in mischievous exploits.

The planet Mercury is the closest planet to the sun in the solar system. It is the smallest of the eight planets, since Pluto is now a dwarf planet. This planet does not have any known moons, and it has an eccentric orbit around the sun that lasts only 88 days. It experiences extremes in temperature ranging from -300 degrees Fahrenheit at night to 800 degrees Fahrenheit in the daytime.