What happens inside a star?

While the surface of a star – known as its photosphere – appears a busy place, it is nothing compared to its interior, which is a hive of physical processes

Anatomy of a star Core The core of stars is where the vast majority of their nuclear fusion reactions take place. Temperatures are incredibly high, often over 10 million degrees Celsius (18 million degrees Fahrenheit). Magnetic field Magnetic fields permeate all stars, with magnetic field lines arranged according to local conditions. Earth’s Sun has a dipole magnetic field. These fields are commonly distorted by the star’s internal dynamo. Radiative zone Each star has a radiative zone where energy from the core is directly radiated outwards through its gaseous material. Lowmass stars have radiative inner layers, while high-mass stars have radiative outer layers. Subsurface flows Subsurface flows are driven by both the distorting effect of the star’s dynamo and also, on low-mass stars, by large convection zones that unstably transfer energy…

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All About Space Tour of the Universe (Digital) - 1 Issue, All About Space Tour of the Universe 4th Edition

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