NASA Probe To Swoop Past Surface Of Saturn Moon

NASA's Cassini probe will swoop past one of Saturn's moons just 30 miles away from its surface. Cassini is making three close passes of Enceladus as it comes towards the end of its decade-long mission. Enceladus is one of only three outer solar system bodies - along with Jupiter's moon Io and Neptune's moon Triton - where active eruptions have been seen.