That would require a civilization to actually have existed for a long enough time to be millions/billions of years ahead of us without having gone extinct. They would also have to exist in sufficient proximity of us...The upper speed of light and hence travel for all matter in the forms currently accessible to us means we simply cannot travel to or even observe the expanses of universe...physical laws that limit us to "speed of light" won't apply...
Given that there is a possibility to move to such a plane of existence, any civilization would probably need to exist for millions of years before thats possible...
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To say that our current knowledge of conveniently termed "Laws of Physics" is incomplete would be an understatement by large.
Creation of miniature wormholes is currently an impasse but may not be so in near to mid term future - human colony on Mars would need to communicate with Earth in real-time and if microscopic wormholes connect communication centers on both end we would already have faster-than-light (FTL) communication.

Ambition to populate nearby planets is a precursor to acquiring FTL communication capability and Elon Musk is a man symbolizing that whole idea.
Imagine if there is a sort of galactic inter-planetary Internet and we just need to tune in by becoming FTL capable species.
On the other hand all that we call "matter" can be reduced to information, and if you can stream that information it may be recomposed as "matter" on the other end.

Doors of Knowledge are wide open, we just need to be ambitious and brave enough to step through and further promote our own brand "Made in Earth by Humans".