Initially it is hydrogen. When that is spent, stars move to fusion of helium. There are also other fusion processes which take place: which process depends on the stars' mass.
Initially it is hydrogen. When that is spent, stars move to fusion of helium. There are also other fusion processes which take place: which process depends on the stars' mass.
The fuel for stars is primarily hydrogen, which undergoes nuclear fusion in their cores to form helium. This fusion process releases energy in the form of light and heat, which is what allows stars to shine and maintain their brightness over millions to billions of years.
The 2014 Ford Fusion runs on regular unleaded.
The 2008 Ford Fusion runs on regular unleaded.
The 2010 Ford Fusion runs on regular unleaded.
The 2007 Ford Fusion runs on regular unleaded.
The 2013 Ford Fusion runs on regular unleaded.
The 2011 Ford Fusion runs on regular unleaded.
The 2009 Ford Fusion runs on regular unleaded.
The 2006 Ford Fusion runs on regular unleaded.
The 2012 Ford Fusion runs on regular unleaded.
When stars "age", they spend their fuel source in a nuclear reaction (usually nuclear fusion).