How did people imagine flyingto the moon millennia ago when the moon and stars were not even known to be places that could be traveled to? They were painted on the sky for all anyone knew
Where do you find an empty universe to even put a symmetrical sphere? Is this universe empty? You can do this forever and never really makesense
Einstein was a negative pessimist, which is why with all his ability he never created built or patented anything. His world knew hunger but all he ever did was to remain in school as a perpetual child who was too simple to comb his hair.
Would you be reading this now if everyone agreed it couldn't be done?
Your problem is you are listening to the imbecile who said that the universe was a bubble....
Term bubblebrain