A survey of free services and apps that let you keep tabs on space weather so you can anticipate the next great aurora.
Learn exactly how and when to expect the next display of the northern lights with a few easy-to-use online tools.
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.
The National Oceanic and Atmospheric Administration (NOAA) predicts a strong chance of geomagnetic activity tonight, October 13–14.
In search of a pitch black night? Don't expect to find it on Earth. Thanks to starlight, zodiacal light, and especially airglow, true darkness doesn't exist.