The Sun is more than 99% of the mass of the solar system. The sun is the center of the solar system. The Sun without the /rest/ of the solar system would be extremely boring.

By far the most interesting thing about the sun is that it is part of a system…

class of space groups, lattices, point groups, or crystals

ratio of the speed of light in vacuum to that in the medium

Wikimedia list article

Compiled from a number of different sources and synchronized.