Radius of the observable universe is 46 billion light years. Say you have two civilizations 26 billion light years apart. Could they send maps of their observable universe to the other civilization so in 26 billion years they know what was beyond the edge of their observable universe?
In: Physics
This would not be possible if communication is limited by the speed of light. The universe is expanding and accelerating, and galaxies that are super far away will be out of the visible universe of each other before a light speed communication could make the trip. The information would never make it. However, in some sci fi scenario where communication can happen faster than the speed of light (like the ansible in Ender’s Game) then yes it could happen.
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