hello , how does the sun work????

Question: hello , how does the sun work????
- Keywords:
  sun
Asked by fionabreen to Aggelos, Andrew, Eileen, Naomi, Shane on 16 Nov 2012.
- Aggelos Zacharopoulos answered on 16 Nov 2012:
  
  Hi @fionabreen,
  the sun is a great big ball of fire mainly consisting of hydrogen and helium gasses. The hydrogen is responsible for the vast amounts of solar radiation produced by the sun. In a process called “fusion” the hydrogen subjected to very high pressure, turns into helium and produces intense radiation (it is an exothermic reaction). The solar radiation travels through space to reach our little planet and sustain life. There is so much hydrogen stored in the sun that scientists expect it to last for at least another 5 billion years!!!
  
  Here is an idea of how vast are the amounts of energy produced by the Sun. The sun offers more energy in 15 minutes than the human race uses in a whole year. And this is only the energy reaching our little planet!
- Eileen Diskin answered on 19 Nov 2012:
  
  Hello Fiona! That’s a great question to think about, since the sun is always there but we probably don’t think much about how it actually works.
  
  Aggelos gives a great answer about what its made up of, and how that works to give us sunlight.
  
  Something that I think is cool about the sun is just how big it is…it makes up over 99% of the mass in our solar system!
- Andrew Jackson answered on 21 Nov 2012:
  
  yep.. aggelos gives a great explanation./

Question: hello , how does the sun work????