Definition of environment
THE LIFE OF A STAR
The Sun: Our Star The Sun is an ordinary star and shines the same way other stars of its type do. The bright part normally seen is called the photosphere,
Outline of The Sun (Ch. 10) (Not exactly like the book)
Stars and Planetary Systems and Galaxies, Oh My!!!
Stars A self-luminous celestial body consisting of a mass of gas held together by its own gravity in which the energy generated by nuclear reactions in.
Graham Loveland
WWK: Understand the leading theories of the evolution of the universe including the big bang, redshift, and the age of the universe.
