Morgan Freeman has one of the most distinctive voices in Hollywood...even when he's on helium. 

In a trailer for the series Through the Wormhole, a show which tries to answer the universe's most difficult questions and is presented by the one and only Morgan Freeman, the legendary actor decides to have a hit of some helium as he explains about how physicists are studying gravity in places where they hope it will react in way that they don't expect. 

No better segue then for Freeman's iconic timbre to take on a whole new pitch as he inhales the contents of a balloon and tells us that gravity (and his voice) may well "act very strangely".

Via Metro.co.uk