Why is only the observable universe is observable?
In: Physics
It all has to do with the speed of light and the expansion of the universe.
The universe is only 14 billion-ish years old. The center of our observable universe is earth. We can only see 14 billion light years in any given direction because anything farther away, the light hasn’t reached earth yet.
Also, the universe is expanding at faster than the speed of light. At the “edge” of our observable universe, some of that light will never reach us because the event emitting the light is getting farther as farther away every second creating more space for that light to travel through.
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