It HAS all been answered...in excruciating detail. There are websites devoted to answering it. There have been at least two TV programs devoted to detailed explanations!

There's no way to 'answer' those who just stare at the answers and refuse to believe those answers, no matter WHO explains it. Anyone who just can't accept that such a catastrophe can happen without some 'vast conspiracy' directing it and covering it up will just bring up the same 'questions' over & over. They want to believe that it's all a plot and that 'someone is lying to us'.

Go READ all the other threads on this and look at the answers.....