The second stage of SpaceX's Falcon 9 rocket captured an amazing view of Earth during the launch of the Intelsat 40e ...

The quiet arrival offers another indication that the sun is moving into the declining phase of its 11-year cycle.

For the first time, the effects of a geomagnetic superstorm on the Earth’s protective plasmasphere have been observed in detail. The storm in question compressed the plasmasphere by 80 percent, ...