Evidence indicates an engine failed 15 seconds after ignition , Orbital 's CEO says . Last week , a company spokesman said the unmanned rocket , which exploded in a fireball at NASA 's Wallops Flight Facility in Virginia , was deliberately destroyed after it became apparent there was a problem . The turbo pump in one of the engines likely failed , he says . Comment:
Evidence indicates an engine failed 15 seconds after ignition , Orbital 's CEO says . The turbo pump in one of the engines likely failed , he says . Comment: