Do you believe in UFOs?
To celebrate World UFO Day, we discussed whether there really is anybody out there with Happy Mondays star Shaun Ryder and scientist Dr Martin Archer.
A total of 83,715 UFO sightings were reported across the world in 2017 - a 12% increase from the previous year.
Shaun Ryder is a firm believer in UFOs and says he had his first sighting aged 15, while Dr Martin Archer believes there's no evidence to suggest aliens exist and most sightings in the sky can be explained.
Watch the full debate above.