Impossible World

In 2050 A.D., the Earth spaceship Tycho lands on the eighth moon of Saturn, nine hundred million miles from the sun. Hugh Benning, a mineraologist, and his men explore the deserted world. When they come to a natural cave, the men begin to stagger and fall. Benning disappears into the mouth of the cave.

The pilots gather up the limp forms of Benning''s men and return them to Earth. The team isn''t d...