This artist's rendering shows a cross-section of the ice shell immediately beneath one of Enceladus' geyser-active fractures, illustrating the physical and thermal structure and the processes ongoing below and at the surface.
NASA's Opportunity Mars rover, which landed on the Red Planet in 2004, now holds the off-Earth roving distance record after accruing 25 miles (40 kilometers) of driving. The previous record was held by the Soviet Union's Lunokhod 2 rover.
Today: Cardio Ox Ultrasound and Blood Pressure (BP) Operations: With Commander (CDR) Swanson as operator, Flight Engineer (FE)-5 Wiseman collected ultrasound and BP data for the Flight Day (FD) 60 Cardio Ox investigation.
One of the more spectacular scenes of the Aurora Borealis was photographed by one of the Expedition 40 crew members aboard the International Space Station from an altitude of approximately 223 nautical miles on July 15, 2014.