Virgin Galactic inks a deal with NASA to help train private astronauts (SPCE)

· Virgin Galactic said Monday it's signed a deal with NASA to train astronauts and support space missions. 
· Investors cheered the news, sending shares higher by as much as 20%. 
· Virgin is actively taking reservations for private flights as it races with SpaceX to send tourists to space. 
· Visit Business Insider's...