how do investigators find “what caused the fire?” Or “what caused the shuttle to explode?” Or any root cause of some event where much or all of the evidence has seemingly been destroyed?

Question

how do investigators find “what caused the fire?” Or “what caused the shuttle to explode?” Or any root cause of some event where much or all of the evidence has seemingly been destroyed?

In: Other

Answer 1

In the case of both the Challenger and Columbia disasters, but were blanketed by cameras, and much of the hypothesis was formed from analyzing the video.

https://www.c-span.org/video/?403748-1/reel-america-space-shuttle-challenger-accident-investigation

https://www.space.com/amp/19436-columbia-disaster.html