According to it the universe will contract and all particles come closer look like a ball and burst again. But it happens with gravity but gravity not as strong as at time of bigbang. This is now the question.
the universe is expanding. so in the future all the planets will loose gravity leaving their orbits everything will become a chaos
Well clearly you have to know how to reach the future to invent it. You would have to program it to search the future. And to do that that... Well there are many different theories as to how to visit the future. In our universe now, perhaps it wouldn't work. The future has not happen. But if you view space time as the 4th dimension (also there is the Euclidean 4th dimension), and can develop a machine that locates and enters wormholes to a parallel universe, yes, it is entirely possible. Also, who knows what the future holds?
Of course the future will happen... whatever will happen but hasn't happened yet is the future.
Lego Universe happened in 2010.
Disney Universe happened in 360.
Entropia Universe happened in 2003.
It happened in the center of the universe, for which it is still expanding on the universe.
to say that something will happen in the future
Dancing Stage Universe happened in 2007.
Bust-a-Move Universe happened in 2011.
DC Universe Online happened in 2011.
Mega Man Universe happened in 360.