This image from video by KABC TV Los Angeles shows wreckage of what is believed to be SpaceShipTwo in Southern California's Mojave Desert on Friday, Oct. 31, 2014. A Virgin Galactic space tourism rocket exploded after taking off on a test flight, a witness said Friday.

KABC TV / AP

This image from video by KABC TV Los Angeles shows wreckage of what is believed to be SpaceShipTwo in Southern California's Mojave Desert on Friday, Oct. 31, 2014. A Virgin Galactic space tourism rocket exploded after taking off on a test flight, a witness said Friday.