The unmanned Antares rocket carrying a Cygnus cargo capsule headed into space from NASA's Wallops Flight Facility in Virginia. The spacecraft carried 3,000 pounds of cargo, including science experiments.
Though only Russia's Soyuz space capsule can deliver astronauts to the space station, a number of cargo capsules, such as the Cygnus used on this Orbital-2 mission, can now resupply the orbiting lab.
In the colorized image, the blue-green ice represents relatively pure frozen water. The red ice holds water mixed with salts and possibly sulfuric acid.
A sea is thought to lie beneath Europa's icy crust. The red bands may contain material from this deeper water.
Galileo took the image of this 10,403-square-mile patch of the moon (26,944 square kilometers) in a series of flybys in 1997 and 1998. In some of the flybys, the spacecraft passed within 13,237 miles (21,700 kilometers) of the moon.