He draws attention to Bennu, a carbonaceous asteroid discovered on September 11, 1999, with an equatorial radius of 926 feet. That scale becomes meaningful when placed against a known reference point. The asteroid that struck Arizona and created Meteor Crater, roughly a kilometer wide and 600 feet deep, was only between 100 and 150 feet in diameter. It was also an iron asteroid, which matters. Bennu is significantly larger, and the composition differs. The comparison invites a straightforward question: what would an object six times larger, made of different material, do if it followed a similar trajectory? The evidence from Arizona gives a baseline. Scaling up from there requires understanding both size and density.