The Ulysses spacecraft studied the magnetic field lines of this body.
Time variances of the differential rotation of this body create "jet streams" below the surface known as torsional oscillations. Features of this body in the x-ray spectrum such as Moreton waves were observed by the Yohkoh experiment. The Ulysses spacecraft studied the magnetic field lines of this body. The tacholine separates the larger, inner radiative zone of this body from its outer convective zone. This body is surrounded by its corona, and variations in the magnetic field of this star create its namesake flares. For 10 points, name this star, which is the closest one to Earth.
Time variances of the differential rotation of this body create "jet streams" below the surface known as torsional oscillations.
Sun [or Sol]