What did ernest rutherford find out and when?

In 1909 Ernest took positively charged particles and fired it at a thin sheet of gold the idea was that if the positive charge in the atom was generally spread out as JJ Thomson proposed in the plum pudding model then the particles should go right through it because there would not be any concentrated positive charge to repel them. weirdly though some of the particles were deflected to the side some even bounced right back. this proved JJ theory wrong