Exploration of Jupiter reach Europa after a 6.5 year cruise. The spacecraft would fly by the moon 32 times to minimize radiation damage. Because of the possibility of subsurface liquid oceans on Jupiter's moons Europa, Ganymede and Callisto, there has been great interest in studying the icy moons in detail. Funding difficulties have delayed progress. The "Europa Orbiter" was a planned NASA mission to Europa, which was canceled in 2002. Its main objectives included determining the presence or absence of a subsurface ocean and identifying candidate sites for future lander missions. NASA's "JIMO" ("Jupiter Icy Moons Orbiter"), which was canceled in 2005, and
Epithets of Jupiter southern peak was the most ancient sanctuary of the god, traditionally said to have been built by Romulus: this was the shrine of "Iuppiter Feretrius", which was restored by Augustus. The god here had no image and was represented by the sacred flintstone ("silex"). The most ancient known rites, those of the "spolia opima" and of the fetials, connect Jupiter with Mars and Quirinus, and are dedicated to "Iuppiter Feretrius" or "Iuppiter Lapis". From this earliest period, the concept of the sky god encompassed the ethical and political domain. "Juppiter Tonans" ("Thundering Jove") was the aspect ("numen") of Jupiter venerated