Galaxy Primes
Author: first_name: E. E.
last_name: Smith
Language: English
Year: 1959

They were four of the greatest minds in the Universe: Two men, two women, lost in an experimental spaceship billions of parsecs from home. And as they mentally charted the Cosmos to find their way back to earth, their own loves and hates were as startling as the worlds they encountered.  - Summary by Original book cover