• Question: When will the sun explode

    Asked by Cooldude1604 to Alex on 10 Nov 2014.
    • Photo: Alex Pool

      Alex Pool answered on 10 Nov 2014:

      Hi cooldude1604,

      Big stars explode when they’ve used up all their fuel. Our sun shouldn’t use up all of its fuel for another 7 billion years, but it’s not big enough to explode.

      Our sun will turn into a red giant, where it turns red and expands outwards, before collapsing back into itself which is called a white dwarf and will then cool down.

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