0

As a particle moves away from us, its apparent size keeps decreasing. Is there a minimum apparent size that a particle needs to be before it becomes unobservable, and therefore is not in our observable universe, and therefore exerts no gravitational attraction?

Would general relativity and quantum physics agree on the answer?

Paul
  • 333
  • 1
    Possible duplicates: https://physics.stackexchange.com/q/200781/2451 , https://physics.stackexchange.com/q/331647/2451 and links therein. – Qmechanic Jul 21 '18 at 16:03
  • I think it may not be a duplicate. The question seems to be about the apparent size of an object vs its gravitational attraction. It shows a misunderstanding of "observable" in the sense of "too small to see" vs "observable in the sense of "observable universe". – S. McGrew Jul 21 '18 at 19:52

0 Answers0