Our Sun will never explode. The truth is, some stars run out of energy and die out like a light bulb, others explode. Based on the small size of the Sun... I think we'll be fine. Our Sun will not explode.
Feel free to judge, I may be wrong on some things.
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Dude, I will be amazed if human civilization survives the next 100 years without degrading into a climate change induced Mad Max post-apocalyptic wasteland, so I'm not too worried about what the sun might do in a few billion years.