One of my favorite actor, John Travolta was offered the chance
to go up into space from Richard Branson (Founder and Chairman
of the Virgin Group).

However, he turned down the offer although he like the idea
because it would take about 6 months of trainings before taking
this flight and it would mean too much lost income for him.

Sounds like he may reconsider if there is incentives for doing
this? But, isn’t John Travolta rich enough not to be concerned
this way?

Source:Showbiz Spy