The short answer: quite a lot
spacex
Beam Him Up, SpaceX: Star Trek’s Scotty Laid To Rest In Space
Seven years after his death at age 85, James Doohan is reaching the final frontier at last.
Travel to Mars, Cheap: Efforts Underway to Make The Red Planet Budget-Friendly
An American rocket company is partnering with NASA to make missions to Mars an easy-on-the-wallet endeavor, a public sign of the enterprising private sector that was used to justify the termination of the government-backed space program.
Lunar Vacation: Company Books Moon Ride in Private Space Race
Astrobotic Technology has just booked a ticket to the moon and has possibly clinched a multi-million dollar prize.
SpaceX Flight Launches: Could Private Space Flight Make NASA Irrelevant?
Talk about outsourcing.
