BobRingReflections

  I’ve written about the history and science of the universe and its countless galaxies of stars, the Earth, and the Moon.   It’s time I wrote about the Sun.   After a short introduction, I’m going to review the Sun’s history and science in terms of how and when our solar system was formed; the Sun’s star classification; early human observations of the Sun; our exploration efforts to date; the Sun’s physical characteristics - including its composition, structure, how it work, and solar activity; the Sun’s location and motion within the Milky Way galaxy, and finally, the life cycle of the Sun. My principal sources for this article include “Our Sun,” solarsystem.nasa.gov; “Earth’s sun:   Facts about the sun’s age, size and history,” space.com; “Sun - astronomy,” britannica.com; “The Sun,” universetoday.com; “Life Cycles of Stars,” imagine.gsfc.nasa.gov; “Sun,” Wikipedia; and numerous other online sources. The Sun has been called by many names.   The Latin word for Sun is “sol,” w