Life on Earth will surely be wiped out eventually. We've got another billion years or two before the oceans boil and the planet becomes uninhabitable. The Sun will heat up, swell into a red giant, fuse helium in its core, then blow off its outer layers and contract into a white dwarf. But even our own Milky Way will cease to exist. When enough time passes, there will be no stars, stellar remnants, or even black holes left at all.