A huge sun eruption combines with speedy solar wind from a "coronal hole" for a weekend aurora show, experts predict.

A G3 geomagnetic storm is predicted to strike Earth, with displays of the Northern Lights possible across northern U.S. states.

Alexander Manzyuk/Anadolu via Getty Images A massive eruption on the sun that flung solar plasma toward Earth on Friday may trigger a strong geomagnetic storm this weekend that could supercharge ...