Geologists are closely monitoring Mount Spurr in the Aleutian Arc of Alaska, USA, after continued volcanic unrest. The Alaska ...

Those fountains fed multiple lava streams, with the flow covering 15-20% of the crater floor. In addition, the USGS said a small fountain was observed in the south vent, and a small lava flow emerged ...

Apollo 14 lifted off from NASA's Kennedy Space Center in 1971 on the first crewed mission to the Moon's highlands.

During their first day on the dangerous island, Richards and Walker climbed the cone and descended 200 ft. into the crater, often sinking to their knees in fine lava dust. They watched steam ...