KRYPTON

A colorless element that is one of the six inert gasses

• Doomed fictional planet

• Doomed planet of comics

• Fission product

• Gas in fluorescent lamps

• Green planet of the comics

• Inert gaseous element

• Its atomic number is 36

• Jor-El's planet

• Kal-El's birthplace

• Neon cousin

• Superman's birthplace

• Superman's home

• Occurs in trace amounts in air