The magnetic activity of stars has a significant influence on stellar oscillations, which complicates the precise determination of fundamental properties such as the mass, radius and age of stars.

It seems that the solar cycle of magnetic activity is meddling with their efforts. Of course, we can verify the sun's true age through independent means — and we therefore know it's about 4.6 ...

The shift in polarity marks the point at which the sun is halfway through solar maximum, the height of its activity, and the beginning of the shift toward solar minimum. The sun's magnetic field ...

Large and complex sunspot groups characterize the surface of the dynamic sun during its activity cycle. A new camera system at the Vacuum Tower Telescope (VTT) at the Observatorio del Teide on ...

The sun, and the intense magnetic activity it generates that causes the northern lights, waxes and wanes on an 11-year-long solar cycle that is at its maximum. Because NASA anticipates the solar ...