Close to Critical

by Hal Clement and Rod Clement

Published May 1966
Shrouded in eternal gloom by its own thick atmosphere, Tenebra was a hostile planet: a place of crushing gravity, 370-degree temperatures, a constantly shifting crust and giant drifting raindrops. Uncompromising - yet there was life, intelligent life on Tenebra. For more than twenty years, Earth scientists had studied the natives from an orbiting laboratory... and had even found a way to train and educate a few of them.

Star Light

by Hal Clement

Published 12 January 1978

The return of Barlennan

Dhrawn was a giant rockball, more than 3,000 times the mass of Earth. Perhaps a planet, perhaps a nearly dead star, the 17 billion square miles of mystery cried out for investigation. But its corrosive atmosphere and crushing gravity assured that no human would ever set foot on its surface.

Those hardy, caterpillar-like Mesklinites, on the other hand, were ideally suited to explore Dhrawn, and their leader certainly knew a good deal when he saw one. So Barlennan, a shrewd sea captain if ever there was one, struck a sharp bargain with the Earthmen for his services in leading the expedition.

But the humans might not have been so pleased with their side of the bargain, if they had known that Barlennan had plans of his own for Dhrawn . . .

The stunning sequel to the classic SF novel Mission of Gravity.