Is there an end to the Universe? Is "time" a dimension

I thought the word "Universe:"mean t" Everything"..... If there IS an end to the Universe, then there can only be Nothing....not empty Space.....but Nothing, afterwards. The human mind connot conceive of Nothing, just as it cannot conceive of
Endlessness lasting for Eternity. Right?......or is the World actually Flat? Define 'Nothing".

the universe has two possible out come its round and you'll go around in circles for ever or its endless
and yes time is a dimension

Time is not a dimension. It is the measure of motion within dimensions. Universe means everything that is space and that exists within space. It does not cover anything that exists outside the universe. You cannot possibly know what is beyond the boudary of the universe, unless it has been detected or some otherworldly source accurately revealed it to you. Nothing is endless in size. Time is endless but not the universe. We are just so incredibly small and puny that we cannot discern the boundary of the universe, besides the fact that the early universe was cloudy, hazy, and gloomy from gas. This gas would block the view of the boundary of the universe. The world and the universe are both oblate spheroids.

@ Davis...then stop talking in your nonexistence or sleep

You've asked questions that have absolutely no *verifiable* answers. Lots of speculation, yes, but no proof whatsoever.

One of the most popular concepts is that "beyond" our universe lie other universes, the so-called multi-verse or parallel universes idea. Many scientific research groups are currently searching for any evidence for such things. If any of the multiverse concepts are actually true, then your statement, "If there IS an end to the Universe, then there can only be Nothing" wouldn't be true.

if there is one universe, most likely there is many, even endless universes, is there only one grain of sand? some researchers have found that alot of galaxies are being diverted to one side of our universe, possibly due to another getting to close to us and the gravity from it pulling on us,