Okay, But Really, Is Time Travel Possible?
One of the biggest tropes in sci-fi is time travel! Heroes and villains often go back in time to try and change an event or stop an event, even though it will mess up the future. But is it really possible? Spoiler: nah. Adi Foord, Assistant Professor of Astronomy and Astrophysics at the University of Maryland explains why:
“Famously, physicist Stephen Hawking tested the possibility of time travel by throwing a dinner party where invitations noting the date, time, and coordinates were not sent out until after it had happened. His hope was that his invitation would be read by someone living in the future, who had capabilities to travel back in time. But no one showed up. As he pointed out: ‘The best evidence we have that time travel is not possible, and never will be, is that we have not been invaded by hordes of tourists from the future.’”
