Really? You think the chocolate bar came before the Roman Empire? Mars is the Roman god of war, which is where the planet got its Western (European) name over 2000 years ago. read more
The Mars Bar was first introduced in 1932. Since I am lazy I will merely reference H. G. Wells’ “The War of the Worlds” which was published in 1897. The planet was named first. read more
although the chocolate bar mars coincidently has the same name as a planet it was not intentially named after the planet, it was infact developed by Frank Mars in 1923. read more