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As a sheepy I of course am able to travel in time.
So, next Tuesday I'm planning to go back in history to when the Universe was about one metre old. When I arrive i will be a smug sheepy and very proud of myself and will kick back and chill for a bit. Say,I want to stretch and jump for joy ? will i be able to knowing that my stretched out limbs will be larger than the universe ?
If ewe could le me know please as I need to leave a not for the milkman to not deliver that day.
What if the rules of a metre size Universe do not apply to a sheep and thus I am able to maintain my larger 'than-a-metre-stretch' ?
So, next Tuesday I'm planning to go back in history to when the Universe was about one metre old.
will i be able to knowing that my stretched out limbs will be larger than the universe ?
It depends on the nature of that universe. If it was a closed universe (like a hypersphere), your arms would stretch around it and you'd be able to shake your own hand. Since light would also loop around that universe, it would look as though you were surrounded by an uncountable number of copies of yourself. This was written about in Michio Kaku's book "Hyperspace".
Quote from: neilep on 02/08/2021 12:24:33So, next Tuesday I'm planning to go back in history to when the Universe was about one metre old.The universe doesn't have a known size now, so couldn't have in the past either since it is impossible to stretch a finite number into an infinite one. So hypersphere aside (Kryptid covered that), let's suppose that we consider a time when what is the visible universe today was only a meter wide. And never mind the violence going on. No scorched wool.So I think that if you stretched your arms out, the universe would be an awful lot larger by the time you got the hooves out there. Do sheep have arms?? If the arms were already out there, they'd be immediately yanked away by their own inertia.Quote will i be able to knowing that my stretched out limbs will be larger than the universe ?Yes, because the universe will grow in size far faster than you could get there, just like if you had 200 BLY arms today, but all curled up inside our 92 BLY across visible universe, you'd have no trouble stretching those arms out to their full length and still seeing them when they're all the way out.
Most probably on atomic scale your arms might break to peaces and got scattered, trapped by stars, black holes and continue spaghettification. Maybe we can put probes that will send valuable data for the universe exploration.