VENUSInterplanetary hunters Tommy Strike and Gerry Carlyle stalk the monstrous Whip, suffer under the onslaughts of the Whiz-Bang Beetles and track the huge Shovel-Mouth.JUPITEROn the fifth Jovian satellite, Quade and Carlyle pit themselves against the fire-breathing Cacus.THE GAS GIANTSThe hunters meet the Shaggies, the Goras and the amazing, tunnel-boring Rotary Mole.ALMUSSEN'S COMETBattling against the fierce three-headed Hyclops and the intelligent, extra-Solarian Protean.