In a new study published in The Astrophysical Journal, a group of researchers from the University of Colorado Boulder ...

Beyond the local interstellar clouds and their wispy clumps of hydrogen and helium atoms in the form of gas and dust, the ...

The powerful X1.1 solar flare from sunspot region 4298 sparked strong radio blackouts on the sunlit portion of Earth at the time of eruption.

The sun’s current 11-year activity cycle has already peaked—but extreme outbursts from our star may still be in store ...

GREGOR's high-resolution FAST IMAGER happened to scan the sunspots in active region NOAA 14274 just 30 minutes before the emission of an X1.2 solar flare, giving researchers an unprecedented view of ...

A sunspot, potentially generating multiple solar flares, may lead to auroras that could be visible as far south as Alabama.

Sunsets will start getting later before the winter solstice — but mornings keep getting darker. Here’s the surprising science ...