4 ms·

What proof exists for this hypothesis?

• vermilingua 3y ago
  The hypothesis that we are surrounded by an event horizon? That's not a hypothesis, it's a logical conclusion. The observable universe has a boundary beyond which the expansion of space is faster than the speed of light; therefore light cannot reach us, which is the (loose) definition of an event horizon.
  • rocqua 3y ago
    In other words, the evidence for that is the evidence of the exponential(ish) expansion of space.