+ Video of impact experiment (3 MB)
+ Higher resolution version (8 MB)
Air Gun Experiment
This video shows an impact experiment of a high-speed impact into a
frozen comet-like material (dust, ice, window cleaner and
Worchestershire sauce) over a highly porous target (garden perlite).
The impact makes a small hole in the comet, simulating a
strength-controlled crater, but a large crater grows below and peals
back the surface crust like petals of a flower. The result is similar
to a deeply buried explosion.