The description of the word you requested from the astronomical dictionary is given
'Mer‧cu‧ry; Mercurius = [Latin] the messenger of the gods
- In astronomy, Mercury is the first planet of our Solar System,
counting from the Sun. Mercury is a terrestrial planet without moons,
rings, or an atmosphere. Mercury has a diameter of 4880 km and is
number 11 on the list of largest objects in our Solar System.
- On Earth, mercury is a metal that is liquid at room