can an asteroid skid across a planetary surface?

2021-04-19 1:21 pm
i mean, can an asteroid impact at such a shallow angle that it remains completely intact, simply skidding across the surface instead of impacting and vaporizing itsself?

回答 (2)

2021-04-20 12:20 am
I remember reading about a pair of odd, very long lakes somewhere in South America; a dozens of yards wide, but maybe a mile long, almost parallel to each other.  Glaciers were first thought to be the cause, but later it was determined that an asteroid likely broke in two, then each piece skidded/skipped across the landscape, and then left the surface.  It may have been slowed to the point of falling back somewhere further down range, or it may have had enough kinetic energy to reenter space & keep going... 
2021-04-19 2:24 pm
Sure, if you get an asteroid that is large enough that it will survive both entry and exit out of the atmosphere, it could happen. Meteors skim the atmosphere all the time. However, if the asteroid impacted the surface of a rocky planet like Earth, it would probably stop or slow down below exit velocity. It would have to just barely make contact with the surface to be able to escape. 


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