9/11 a Bluff? can we get Neil deGrasse Tyson´s opinion on it?

When I think back to this day when two buildings were hit by commercial airplanes and three buildings collapsed, I remember how everything changed from that day. This is why i`m writing this post and hope that I can make some kind of positive impact.
I´m a believer in evidence and I also believer that there are a lot of conspiracy theories that are on youtube as an example that are really hurting the goal of revealing the truth of what happened this day.
What convinces me that something is fishy is BASIC PHYSICS!

I know that i`m not an expert in the field of building collapsing, but I know basic physics! In my opinion the fact that THE 2 WORLD TRADE CENTERS AND BUILDING 7 FELL AT FREE FALL SPEED is what gives it all away. This fact leads to the conclusion that Bombs must have been used to bring the buildings down. And if bombs were used, then this changes the everything as we all understand.

All I can say about this is: What if Neil deGrasse Tyson talked about the subject? This is something that there actually is a lot of data on.