... Olympus Mons on Mars is the largest volcano in the Solar System. ... Saturns Rings Seen Sideways . ... This picture from the Hubble Space Telescope was taken on August 6, 1995 when the rings lined up sideways as seen from Earth. Saturn's largest moon Titan is seen on the left, and Titan's shadow can be seen on Saturn's cloud tops! ... This cluster of stars, known as G1, is the brightest globular cluster in the whole Local Group of galaxies. ... The Worlds Largest Ozone Hole . ... August 2009 . ...