I'm estimating that in about 16 hours, the first 'hyper-speed' impact with a comet and a manmade craft will occur. 2 hours before impact the craft will enter into autopilot, and drive itself into the comet at 6.3 miles per second.
"The crater produced by the impact could range in size from a large house up to a football stadium from two to 14 stories deep. Ice and dust debris will be ejected from the crater, revealing the material beneath. The flyby spacecraft has approximately 13 minutes to take images and spectra of the collision and its result before it must endure a potential blizzard of particles from the nucleus of the comet."
Science Articles || Science Blog Community