This picture was taken on Big Island in Hawaii in July 2008 from the Kalapana overlook. The Halema'uma'u volcano was erupting higher up on the island and the lava flowing into the sea was producing a gigantic plume of volcanic gas/water vapor. The lava moves in lava tubes beneath the hardened surface of more recent flows and is invisible until it reaches the sea. The volcano is still active in 2013. by Alain Barbezat
Dione (Saturns 15th Largest) is dwarfed by the looming Titan. Titan appears yellow in colour and is the only moon known too have a dense atmosphere consisting of 98.4% Nitrogen with Methane making up the remainder.
A portion of Titan and its atmosphere. Largest moon orbiting Saturn, bigger than mercury ;)
Saturn's largest moon, Titan, appears deceptively small paired here with Dione, Saturn's third-largest moon, in this shot snapped by NASA's Cassini spacecraft - Credit: NASA/JPL-Caltech/Space Science Institute
Titan, Mimas, Encelade, Dioné passant devant leur planète mère Saturne
Moons on the Move Pin It Credit: NASA/JPL/Space Science Institute - Titan emerges from behind Saturn while Tethys streaks into view in this colorful scene on March 24, 2008. Titan is 5,150 kilometers (3,200 miles) wide; Tethys is 1,071 kilometers (665 miles) wide.