Before revision: An Earth mass (denoted as , M♁ or , where 🜨 and ♁ are the astronomical symbols for Earth), is a unit of mass equal to the mass of the planet Earth.
After revision: M🜨MEAn Earth mass (denoted as , M♁ or , where 🜨 and ♁ are the astronomical symbols for Earth), is a unit of mass equal to the mass of the planet Earth.