It's two billion years away from us..andromeda,our nearest neighbour galaxy is charging towards us.No.Actually,Milky Way is charging towards andro at 75 miles/second or 120 kilometres/second.The smaller of the pair is milky way..which is the older one as well.The solar system may be disrupted even if it doesn't collide head-on to one of the supermassive black holes.It's quite boring,actually.It'll take about two billion years to get there and the slowpoke black holes will take another 3 billion years to merge together,which they will,no doubt.The solar planets may collide with other planets..and the orbits may disrupted..and the changes can go as far as new planets orbiting the sun and even the whole solar system going in orbit round the 240 light-year radius of the new super-supermassive black hole.