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Science begins with a vision.
expanse.
We have to imagine the texture of the universe, with its splashes of galaxies,
being moved by waves similar to those of the sea, sometimes so agitated as to create the gaps which are black holes.
What a fantastic description!
Is there anything else? Was there something before? Perhaps, yes. I’ll talk about it after a couple of lessons. Do other similar universes exist, or different ones? We do not know.
in the mountains time passes faster than at sea-level.
