This image taken by NASA's Landsat 8 satellite captures lava, ash, and gases flowing from Mayon, the most active volcano in the Philippines, Mayon is ...

Auroras may be visible from Alaska to Maine tonight and tomorrow as a speedy solar wind stream is due to arrive.

All things that go up must eventually come down. NASA says that its Van Allen Probe A satellite has fallen precipitously back to Earth after a 14-year journey through space. The probe reentered the ...