The weak spot, known as the South Atlantic Anomaly, was identified in the 19th century and expanded in recent years.

Most of us like stability in our lives, especially when it comes to planet-wide phenomena, such as the daily appearance of the sun or the periodic change of season. So it can be unsettling to learn of ...

The glowing tracery of highly active spiraling tendrils reveals invisible magnetic activity across the surface of the sun, in a newly released NASA video. A combination of computer modeling and solar ...