Changes

|title=Ultima

|author=Stephen Baxter

|publisher=Gollancz

|date=November 2014

|summary=Stephen Baxter writes a sequel to last year's ''Proxima'' - a huge, all encompassing Science Fiction epic that holds ginormous ideas and concepts, but unfortunately forgets to develop characters for some of the ride. Thankfully, all comes together in the end, providing a finale so thrilling it makes the rather difficult start almost forgivable.

}}

In ''Proxima'', alien hatches were discovered across the galaxy, hatches that when opened caused completely unimaginable events to occur - amongst many strange happenings, one character suddenly had a twin she didn't have previously , and one hatch led to a different earth, where the Roman Empire never died.