TheSun(inGreek:Helios, inLatin:Sol) is thestarat the center of theSolar Systemand is by far the most important source ofenergyfor life on Earth. It is a nearly perfect spherical ball of hotplasma,with internalconvectivemotion that generates amagnetic fieldvia adynamo process.Its diameter is about 109 times that ofEarth, and it has amassabout 330,000 times that of Earth, accounting for about 99.86% of the total mass of the Solar System. About three quarters of the Sun`s mass consists ofhydrogen; the rest is mostlyhelium, with much smaller quantities of heavier elements, includingoxygen,carbon,neonandiron.
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