... Titan: Saturns Smog Moon . ... The largest moon of Saturn is a rare wonder. ... The First Explorer . ... The cylindrical 30 pound satellite was launched (above) as the fourth stage of a Jupiter-C rocket (a modified US Army Redstone ballistic missile) and achieved orbit on January 31, 1958. ... Instead, the panels show a strikingly similar system on a much larger scale - a ring around the young, Vega-like star, HR 4796A, located about 200 light-years from Earth. ... Welcome to Planet Earth . ...