Hydranencephaly or hydrancephaly [1] is a condition in which the brain's cerebral hemispheres are absent to varying degrees and the remaining cranial cavity is filled with cerebrospinal fluid.[2]
JPL built and operates the twin Voyager spacecraft. The Voyagers Interstellar Mission is a part of NASA's Heliophysics System Observatory, sponsored by the Heliophysics Division of NASA's Science Mission Directorate in Washington.
The USS Voyager (NCC-74656) was a 24th century Federation Intrepid-class starship operated by Starfleet. The vessel was famous for completing a non-scheduled seven-year journey across the Delta Quadrant between 2371 and 2378, which was the first successful exploration of that quadrant by the Federation.