Did the twin towers blow up before the airplanes hit the buildings?

No. All of that is conspiracy theory. And it is just a theory, not the truth. Don't believe any of it. We all know what happened on 9/11. If there's any doubt of what happened, I can prove all of the conspiracy theories wrong in 1 or 2 paragraphs. The Twin Towers did NOT blow up before the airplanes hit them.