Your My Hy-Vee account provides access to your history, allows you to print records, submit multiple prescriptions at once and more. Learn more. This healthy lifestyle program emphasizes eating for good health, weight loss and being physically active. Beginâ¢ is not a âdietâ- Beginâ¢ is a plan to help with lifelong wellness.
Given sufficient temperature and pressure, 4 hydrogen nuclei fuse to produce helium, at the same time giving off energy in the form of heat and light and other forms of radiation. This means that stars, with a few exceptions such as super-massive stars, last for many billions of years.
Hydrogen in the center of the star will run out, no new heat is made so gravity takes over and the center of the star will start to shrink, the outside of the star float up and cool down, making the star look much bigger and redder.. for the biggest stars, the collapse causes a huge explosion called _____.