Solar Dynamics Observatory images of the Sun at multiple wavelengths. (Credit: SDO/NASA/J. Llama)

Giant planet host star Tau Boo exhibits a short-term magnetic field reversal. (Credit: K. Teramura/E. Shkolnik/IfA)

The Discovery Channel Telescope at Lowell Observatory (Credit: Lowell Obs.)

Artist's view of the giant exoplanet orbitng Tau Bootis, through the star's magnetic archs. (credit: David Aguilar, CfA)