Daniel Stanyer Augusta, Kansas First, let's discriminate between expansion and expulsion. Expansion happens because the thermal pressure from the increased energy production in the Sun's interior ...

The Sun’s extremely hot outer layer, the corona, has a very different chemical composition from the cooler inner layers, but the reason for this has puzzled scientists for decades. One explanation is ...

The powerful magnetic field belonging to the sun is generated far beneath the visible surface.

Diagram of the Sun’s interior and outer atmosphere, showing the core, radiative and convection zones — separated by the tachocline — and surface features such as sunspots, flares, the chromosphere and ...