A survey of free services and apps that let you keep tabs on space weather so you can anticipate the next great aurora.
Two big, naked-eye sunspot groups are putting on a splendid show this week. We're also in the crosshairs for a strong geomagnetic storm and possible auroras.
Keep your eye on the northern sky. Auroras are in the forecast for the next couple nights courtesy of a "hole" in the Sun's corona.