Watch David Harbour address some of the wildest ‘Stranger Things’ fan theories

They're pretty far out...

Stranger Things star David Harbour has addressed some of the weirdest fan theories to have emerged from the hugely popular Netflix show.

The sci-fi series, which stars Harbour as police chief Jim Hopper, will return for a third series in the summer of 2019.

But as fans eagerly anticipate the return, Hopper has attempted to briefly quell their hunger by offering his opinion on the most unusual theories that fans have devised.

In the Vanity Fair video, Harbour addresses whether the Upside Down is actually the future, after the US government drops an atomic bomb on Hawkins. According to the theory, the villainous Demogorgon is capable of travellingl through time and Eleven can predict the future.

Although Harbour confirms that the Upside Down is ‘a reflection of Hawkins’, he refuses to reveal if it’s true – but hints that it will be addressed in future. He also addresses  the not-so serious question of whether Steve Keeney might just be the real father of Jean Ralphio from Parks and Recreation.

Producer Shawn Levy recently admitted that the show’s third season s likely to be set a year after Season 2’s conclusion, during the summer of 1985.

The Duffer Brothers also suggested that the new episodes will have to deal with the kids’ growing up and puberty.

“Even if we didn’t want to deal with [puberty], we have to deal with it because our real-life actors are going through it. I think that’s exciting because it forces the show to evolve and become something different every year,” they told Entertainment Weekly.