Maybe when you die it’s like a file being deleted. You don’t cease to exist suddenly, you just disappear from the world to be gradually overwritten by history, swallowed by space. Maybe a ghost is just a deleted file, an empty space-suit roaming around the universe without the dictates of physics.What words of comfort would you lend me if one day, in some corner of the galaxy you encounter my lonely deleted soul floating about somnolently, drifting slowly as a thin and greying cloud, shivering like a thin old man in the wind, and sobbing, sobbing at my monumental loneliness? I hope you will remind me that it will only be a matter of time, yes only a matter of time until the oxygen-free wind of ones and zeros will infiltrate my spacesuit, out here in this infinite tapestry of ones and zeros. And I’ll be drowned out by the noise of galactic explosions, and the blinding colors of supernovas. Overwritten by this holographic universe, gone and forgotten forever.
The most amazing thing about the world that I can think of, is that the only reason we even understand that our universe had a beginning, or that there are other galaxies besides our own, is because we happen to have evolved just in time to still be able see the rest of the universe retreating from us in all directions. Looking out into deep space is literally looking into a time machine. Many of the galaxies we see today are so far away, so many billions of light years away, that they may not even exist anymore. In other words, by the time the light from those galaxies reach us, most of the stars within it have probably already died. Those far-off ancient galaxies may have merged into different superclusters by now or been swallowed up by a super massive black hole, but we will never know. The most far off things we can see in the visible universe are steadily moving infinitely farther and farther away from us, and everything that surrounds them. If there is intelligent life in a trillion years that looks out at the cosmos, it’s only reasonable conclusion will be that it’s galaxy is the entire universe. The rest of the universe will have retreated so far away toward eternity by that time that it will be undetectable.