Black Hole Planet — Hayford Peirce

Remo Rydel, an Aussie spacetug captain, thought he had troubles enough already. His gorgeous wife, Kalpurna, was dying, sealed unconscious in a med capsule that was nearly at the end of its capacity to keep her alive. The nearest human hospital was a light year away. There wasn't much more that could go wrong, was there? -- Or so he thought, until he stumbled on the BLACK HOLE PLANET.