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Last Post 3/18/2008 8:00 AM by David Alexander

The Sun

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3/18/2008 5:49 AM
About how many more years will the sun last, and when it does die do you think it will be replaced by another star? Eliana, (FWMS)

David Alexander

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3/18/2008 8:00 AM
Hello Eliana, The Sun will be around for a long time yet. For the next 4.5 billion years it will remain pretty much as it is, burning hydrogen to create Helium and light. Then it will evolve to a Red Giant star about 100,000 bigger than it is a present when it starts to consume the helium. This process goes on until all of the available fuel is used up and it settles into a black dwarf stage. The Earth will be long gone by that point being swallowed up by the atmosphere of the Red Giant Sun. CHeers - David