When is the sun going to blow up and what impact will it have on Earth?

Oh honey, the Sun's got about 5 billion years left before it turns into a red giant and swallows up the Earth. So, don't sweat it just yet, we've got some time. But when that time comes, well, let's just say it won't be a pleasant day for us Earthlings. Hope you've got your SPF infinity sunscreen ready by then!