Quote Originally Posted by MadMojoMonkey View Post
Way more than a billion. The sun will still be burning in a billion years. It'll have expanded to larger than the size of Earth's orbit, as it will be in its red giant phase, but it'll still be here.
...
Ok that's interesting. and disappointing. I guess what I'm remembering was someone talking about the CMBR and how much it would suck for astrophysics if you couldn't see it anymore.