If the universe is expanding then what is it expanding into??
if time travel is possible then where are the visitors from the future???
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please do answer or else I won't be able to sleep tonight
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3
there is no end for this universe
it loops itself into it
it is hard to understand, but one day we will find it
and time travel
if they have any technology to hide themselves and be present in this world without being present
even it is hard to think
Answered by
1
Answer:
I think in future time travel is possible
because NASA is working on this project
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