Here's one theory:
Was SpaceX rocket hit by a drone?
Video appears to show an object flying into the launcher moments before it exploded
Grainy video appeared to show small object flying over the SpaceX rocket
SpaceX said an 'anomaly' had occurred while it was being loaded with fuel
A massive explosion destroyed the rocket on Thursday - just two days before it was due to blast Facebook's first satellite into orbit
By Daily Mail Reporter
Published: 07:39 EST, 5 September 2016
Was SpaceX rocket hit by a drone? | Daily Mail Online