Number 11 (Story #4), December 3, 1990 by Phillip F. Schewe and Ben Stein THE CRAF AND CASINI SPACECRAFT , like the Galileo orbiter on its way to Jupiter, have a more complex task than the earlier Voyager planet flyby missions. Casini (named for the 17C Italian astronomer who discovered the gap in Saturn's rings and several of its moons) will orbit Saturn for four years, observing its moons and rings, and will send a probe into Titan's (Saturn's largest moon) atmosphere. It is scheduled for launch in 1996. CRAF (the Comet Rendezvous/Asteroid Flyby), scheduled for launch in 1995, will meet asteroid 449 Hamburga (with a diameter of 53 miles) and then journey near Jupiter to study Comet Kopft. (Astronomy, December 1990.)