Jupiter Project: 2

Serialized in Amazing Science Fiction Magazine in 1972, published as a novel in 1975.

The Jovian Astronautical-Biological Orbital Laboratory, a.k.a. "the Can", is the only home 17-year-old Matt Bohles has ever known. Concerned about the aging space station's failure to find evidence of alien life on Jupiter or its moon, the cost-conscious powers back home have determined that all non-essential personnel must be evacuated. Now, unless Matt can somehow prove himself to be an invaluable member of the scientific team, he faces exile to a dangerous, frightening, and unfamiliar place: Earth.