A new sunspot group has quickly grown and is spewing out the most intense type of solar flare. Effects on Earth are forecast ...
After the winter solstice in late December—the shortest day of the year—the Northern Hemisphere begins a slow but steady ...
The sun has emitted several solar flares in recent days, putting space-weather experts on the lookout for northern lights ...
The sunspot region 4366 fired off dozens of powerful solar flares in 24 hours, including the single strongest flare since ...
A February moon offers a practical preview of where to look for March's total lunar eclipse.
Tonight, Feb. 2, a rare celestial alignment will give skywatchers in northern eastern U.S. states all the more reason to look ...
Regulus — also called Alpha Leonis — is one of the brightest stars in the night sky. The brightest star in the constellation ...
For the first time, scientists have used satellite data to create a 3D map of the sun's interior magnetic field, the ...
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