(Jimmy of the Clue Crew indicates the right-hand column of the periodic table.) On the periodic table, the six gases in this column, beginning with helium & ending with radon, are described as this, because they don't readily react with other elements
[DOC] [TLE] NASA MOONS DUMBED DOWN USA - Geocities [PAR] Russia landed several rovers on the Moon and they blasted off the return SOIL 
..... ``I don't know how to describe it, it's a tremendous achievement, you know?