NASA's Space Shuttle successfully reached orbit during its first attempt in April 1981. The Saturn V rocket that launched the first humans to the Moon also didn't explode during liftoff in July 1969.

Seven names will forever be etched into the NASA history books: Commander Francis R. 'Dick' Scobee, Pilot Michael J. Smith, Mission Specialists Ellison S. Onizuka, Judith A. Resnik and Ronald E.

As billionaire entrepreneurs like Jeff Bezos, Elon Musk and Richard Branson shoot for space, there are reminders that space travel is not always a safe luxury. A number of people have died attempting ...