Is Earth’s magnetic field flipping soon?
The chief cause of the movement comes from the Earth's liquid-iron outer core, which is also called the "core field"
Found after two years: Lost weather balloon GoPro with astounding footage from space (video)
A hiker out in rural Arizona had come across a strange box...
In Photos: How NASA said goodbye to the Opportunity Rover on Mars (photos)
Opportunity's legacy casts a shadow