Are they going to recreate the big bang?
Maybe. Not 'they', but it is predicted that somehow the expansion of the universe suddenly stops, the universe will be pulled together by its own gravity, and will be crused to immense density. This is called the Big Crush or The Big Freeze.
If this happens, there will be another big bang, maybe creating another universe.
It is impossible to recreate the Big Bang. The amount of energy required is, quite literally, unimaginable. To put this into perspective, it would take an accelerator larger than the Milky Way to be able to experimentally prove String Theory- and the amount of energy in the Big Bang is on a scale unimaginable in comparison to the previous example.
big bang are Korean popstar The big bang is a theory, which explains constant cycle of life. It says that at first everything was one then there was a big bang (explosion) and everything went apart. Now magnetically planets are coming slowly together again and then it's going to be a big bang...and over and over and over and over again....
At the end of season/series 5 of Doctor Who, a crack in the universe had completely eradicated everything but the earth from existence. The Doctor flew the Pandorica into the exploding TARDIS and scattered genetic and biological information about the entire universe to recreate it, in effect creating a second "big bang".