2 ms·

We can only reach a finite number of galaxies

• pohl 4y ago
  The set of all galaxies is finite, isn’t it?
  • perihelions 4y ago
    It's not a solved problem. Though the observable subset of the universe is finite, yes.
    • pohl 4y ago
      Would a universe with infinite mass keep expanding? Either way, headline could use some work.
      • perihelions 4y ago
        It's from the author's introduction, but I guess it's moot since we died in the /new queue.
• fsflover 4y ago
  See also: https://en.wikipedia.org/wiki/Big_Rip https://en.wikipedia.org/wiki/Big_Rip.