A tongue-in-cheek paper from Carl Sagan et al. notes that a spacecraft named for this scientist observed signs “strongly suggestive of life on Earth.” (0[2])That spacecraft named for this scientist was troubled by the failed deployment of a high-gain antenna (0[1])and passed 951 (20[1])Gaspra in the (0[1])first-ever asteroid flyby. A group of objects named for this scientist will be studied (20[2]0[1])by the Juice mission (20[1]0[1])and includes (20[1])an object (20[1])characterized (20[1]0[1])by its many (*) lineae (“LIN-ee-AY”), which result from tidal heating. (10[1]0[1])This scientist (10[1])developed (10[1])a device (10[1])with a convergent objective lens (10[2])and a (10[1])divergent (10[3])eyepiece lens, (10[2])allowing him to discover Callisto. (10[2])For 10 points, (10[2])name this astronomer who names the four largest moons (10[1])of Jupiter. (10[2])■END■ (10[8]0[1])