NASA's Cassini spacecraft may have found evidence of liquid water reservoirs that erupt in Yellowstone-like geysers on Saturn's moon Enceladus. The rare occurrence of liquid water so near the surface raises many new questions about this mysterious moon.
"We realize that .
Space History Photo: X-15 Crash at Mud Lake, Nevada
For a relatively long period in the 60s NASA experimented with prototypes of rocket propelled aircrafts. The experiments were geared towards finding if rocket planes were feasible for army use. One such .