but which billionaire will go first? this week bezos announced he will join the first passenger flight on july 20th. the anniversary of that first moon landing. >> it changes your relationship with the planet, with humanity. >> reporter: and bringing his brother, mark. >> i want you to come with me. >> reporter: they could not let that stand. branson tweeted his congratulations but someplace blog parabolic arc reports branson is planning to jump into a spaceship over the july 4th weekend, beating bezos by two weeks. they are not commenting or denying the report. two years ago i asked branson about his astronaut plans. you are really training hard to go to space? >> i am working on getting a body that's nearly 70 years old, you know, into a fitness state of a 20-year-old. >> reporter: there are other billionaires. jarrett isaacman is paying elon musk for his own private trip. we met up with both in february.