TRUE Limits Of Humanity – The Final Border We Will Never Cross

Is there a border we will never cross?  Are there places we will never reach,  

no matter how hard we try? It turns out,  there are. Even with sci-fi technology,  

we are trapped in a limited pocket of the Universe  

and the finite stuff within it. How much  universe is there for us and how far can we go?

If you look at the night sky, you  might assume it will be there forever.  

Stars are born and die again in a cycle that  feels endless. But it is not. Take the milky way:  

Up to 200,000 light years in diameter,  containing some 100 to 400 BILLION stars.  

How many stars do you think are born  here each year? Thousands? Millions?

The answer is around three. Three new stars per  year. 95% of all the stars that will ever exist in  

the universe have already been born and we live  at the tail end of the age of star formation.  

We are at the beginning of the  end of the universe as we know it,  

the formation of new stars  will continue to slow down.

But there is more. It turns out the  universe is rushing away from us.

The Milky Way is not alone - together with  the Andromeda galaxy, and more than fifty  

dwarf galaxies,it forms the Local Group, a  region of space about ten million light years  

in diameter. Our galactic neighbourhood.  Hundreds of galaxy groups like the local  

group make up the Laniakea Supercluster, which  itself is only one of a myriad of superclusters.  

In total there are around two trillion galaxies  that make up the current observable universe.

Unfortunately, even if we could travel at light  speed, around 94% of the galaxies we can see  

are already unreachable for us forever. Let this  number sink in for a moment. The simple fact that  

there is a limit for us, and that there is so much  universe that a human will never be able to touch,  

is kind of frightening. Why are all of  these galaxies out of reach already?

Well, it all has to do with why there are  galaxies in the first place: the big bang.

We are simplifying here, but in a nutshell  about 10^-36 seconds after the big bang,  

the young universe was a very small bubble of  energy. It was not completely uniform though,