Divine worked at the Jet Propulsion Laboratory for 25 years. His research yielded fundamental scientific contributions helping to define complex environments space probes face. Divine studied radiation belts and the dust environment of Halley's Comet. He characterized meteoroid environments and other small interplanetary bodies including asteroid fragments. He worked missions including the Voyager, Galileo Probe, CRAF, and Cassini–Huygens. He served as a mentor for younger space physicists.