The 50-year-old wants to follow in the footsteps of Ashton Kutcher, who has already signed up with Virgin Galactic's upcoming two-hour mission to space, reported Sun Online.
"I'm going to let a couple of other people test it out first but it would be great. I was always hoping when I was a kid that we would be travelling to different planets by now," he said.
On the issue of aliens, Cruise said, "I don't think you can actually count it out. It might be a little arrogant to think we were the only ones in all the galaxies throughout the universe but I've never met one!"