Krypton possibly brought up halfway through a certain Lois's meal (7)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

GAS (krypton possibly: a definition by example), reversed (brought up = upwards in a down clue), inserted into (halfway through) LANE (Lois Lane, character in the Superman comics). For the surface, Superman comes from the planet Krypton.