astronaut

Buzz Aldrin takes you to Mars in VR

The film - Cycling Pathways to Mars - lasts just under 10 minutes and features the astronaut as a hologram narrating the experience.

Mr Aldrin's plan involves using the moons of Earth and Mars essentially as pitstops for people travelling to and from the Red Planet - a trip that will take about six months each way.

Speaking to the BBC, he said he hoped the film would help governments focus on a single plan to get to Mars.

"You can't afford to do them all," he said of competing visions. "Because it's using up the budget that we've got and we're going nowhere."