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
The Complaint of Mars sky. Yet, because of the size of their planetary orbitals, Venus appeared to move away from the house of Taurus much more quickly than Mars. Thus, Chaucer uses the image of Mars wearing heavy armor as a means of explaining the natural phenomena. Altogether, the “Complaint of Mars” serves as an allegory for the astrological phenomena that occurred in April 1385. While this date is still under some debate, the astrological facts are presented as undertones for Chaucer’s poem. Adaptations of Roman myths were popular amongst many authors of the middle ages, and Chaucer wrote several poems in this vein,