From: Ævar Arnfjörð Bjarmason Date: Tue, 29 Nov 2011 10:24:18 GMT Subject: Re: [PATCH] Implement fast hash-collision detection Message-ID: In-Reply-To: <20111129090733.GA22046@sigill.intra.peff.net> On Tue, Nov 29, 2011 at 10:07, Jeff King wrote: > However, it may be of interest that the Sun is expected to burn out in a > mere 10^10 years[1]. Off topic, but it's a a lot sooner than that. The total age of the sun is is around 10^10 (10 billion) years, but we're already ~4.6 billion years along that line. However the Sun is currently in a stage of gradual heating until it turns into a red giant in ~5 billion years. In around 500 million years the earth will be uninhabitable as we know it, and in around 1 billion years the surface will be hot enough to have boiled all the oceans. In other words the earth in a billion years will probably look similar to how Venus looks now.