Beyond The Universe Here
: In this model, if you travel in one direction long enough, you eventually end up back where you started . There is no "outside" because the fabric of space-time itself is all that exists.
When asking "what lies beyond the universe," the answer depends on how you define the "universe" itself. Scientists generally split this into three distinct concepts: what is beyond our sight, what is beyond the physical fabric of space, and what might exist as a "super" structure. 1. Beyond the Observable Universe Beyond the universe
The observable universe is a sphere around Earth containing everything we can currently see. Because light has a speed limit, we can only see objects whose light has had time to reach us since the Big Bang (about 13.8 billion years ago). : In this model, if you travel in
: Our universe could be an isolated "island" floating in a higher-dimensional "super-universe". What's Beyond The Observable Universe? Because light has a speed limit, we can