For instance, the impact ejecta is shown moving at what appears to be about 1/10 light-speed (unlikely), and the atmospheric shock wave is shown expanding at around 600 miles per second, that is, about a million MPH (also unlikely). But considerably more entertaining than something more realistic. The incredible speed-up makes for a more fascinating image, no doubt about it.
Now if I can just tear my eyes away from it.
“But considerably more entertaining...”
That is because its the scene from the movie Armageddon.
It’s why I have trouble with asteroid impact extinction theory in general....sure a big asteroid will make big mess but I wonder if it would make a bigger mess than say...the Yellow Caldera blowing it’s top. Also are we talking about comets, stony asteroid, or iron nickel asteroids and accounting for approximation of size(5 miles in diameter for example; what would the effects of each really be? Also have they accounted for internal temperature of such large objects...which might be still near -200F or lower in the case of the stony and comet type asteroids? That much cold in that much mass might actually mitigate and damp down the explosive effects in the early “impact sequences”.
The iron nickel meteors will have more density and mass/weight so the energy released will be greater but it will make a bigger hole before melting and exuding its heat energy releases more deeply into the surrounding crust....I suspect more of the surrounding deeper structures of the earth would be affected where as the other types due to their brittleness will affect the earth more broadly and more shallowly.
Granted, with a large impactor hitting at 20 miles/second, I would want to already be in a cave 1500 miles away from impact.
Just asking some questions...those who study the subject are invited to better school me...;)
Did I sense a touch of sarcasm in your comment?