William Tenn 
The Ionian Cycle [EPUB ebook] 

The tiny lifeboat seemed to hang suspended from its one working rear jet, then it sideslipped and began to spin violently downwards to the sickly orange ground of the planet. Inside the narrow cabin, Dr. Helena Naxos was hurled away from the patient she was tending and slammed into a solid bulkhead. The shock jolted the breath out of her. She shook her head and grabbed frantically at an overhead support as the cabin tilted again. Jake Donelli glared up from the viewscreen where the alien earth expanded at him.