A study by a Brock University professor has revealed that time travel might be possible if parallel timelines are involved.
In an article for The Conversation, physicist Barak Shoshany of Brock University in Canada suggests that time travel could be possible in real life. There is, however, a small twist.
To begin with, there is a practical issue: in order to build a time machine, a large amount of exotic matter - matter with negative energy — would be required. All matter on Earth contains positive energy, and while quantum physics suggests that exotic matter may be formed in theory, it would be in insufficient quantities and for insufficient periods of time.
Second, time travel, according to Shoshany, could leave science fiction's pages, but only when parallel timelines are involved. This is because of the time paradox, also known as the consistency paradox.
In movies and literature, time travellers are cautioned against engaging with their past selves or altering hi...