Michael A. Stecker
mastecker@gmail.com

The Sun is a G-type main-sequence star (G2v) informally called a yellow dwarf with an estimated age of 4.6 billion years.  It is 93 million miles from earth (one Astronomical Unit, 1 AU).  With a radius of 432,000 miles its volume would need 1.3 million Earths to fill it. The sun's mass represents 99.86% of the entire solar system and its gravity holds the system together, The sun's hottest part is the core where temperatures top 27 million degrees Fahrenheit (15 million degrees Celsius) produced from nuclear fusion of hydrogen to helium. The Sun’s activity from its powerful eruptions to the steady stream of charged particles influences the nature of space throughout the solar system.  Without the Sun's energy life as we know it could not exist on Earth.

I photograph the sun's photosphere in white light to see sunspots and Chromosphere in Hydrogem-alpha light
of 656.28 nanometers to see solar prominences, flares, granulations and sunspots.  The outer atmosphere
called the corona is hotter than the surface and seen during a total solar eclipse.

Photos of the Sun