NASA's Cassini spacecraft snapped this image of Saturn's moon Helene while completing the mission's second-closest encounter of the moon on June 18, 2011.
Saturn's small, irregularly shaped moon Helene is strikingly illuminated in this close view captured by NASA's Cassini during the spacecraft's June 18, 2011, flyby.
NASA's Cassini spacecraft snapped this image during the spacecraft's closest flyby of Saturn's moon Helene, on March 3, 2010. Helene is a 'Trojan' moon of Dione, named for the Trojan asteroids that orbit ahead of and behind Jupiter.
NASA's Cassini spacecraft imaged the surface of Saturn's moon Helene as the it flew by the moon on Jan. 31, 2011. Helene is a 'Trojan' moon of Dione, named for the Trojan asteroids that orbit 60 degrees ahead of and behind Jupiter as it circles the Sun.
Although travelling at great speed, NASA's Cassini spacecraft managed to capture this close view of Saturn's small moon Helene during a flyby on March 3, 2010.