A loose group of stars that was known for over 180 years but never before studied in detail has been revealed to be an important new tool in the quest to understand the evolution of stars like the Sun ...

Earlier this year, Earth experienced two geomagnetic storms caused by outbursts of radiation from the Sun, which had an impact on satellites in space and communication systems on the ground. As it ...

Studies of young Sun-like stars -- used as stand-ins for our own star's early years -- show that these stars often unleash flares far stronger than any recorded from the modern Sun. Reconstructing ...