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.
To quote Buzz Lightyear: To infinity and beyond!. That very well could be Voyager 1's motto. NASA scientists confirmed today that the Voyager 1 space probe has become the first human-made object to leave the solar system and venture into interstellar space. Voyager 1's precise location has been one of the most hotly debated scientific topics of the past year.