Have we ever observed, or better yet, recorded, an impact from a comet/meteorite/fragment/etc on another celestial body? For example, in all its time orbiting Mars, has the MRO observed anything impacting the surface?
All the other objects in our solar system that we've observed (aside from gas giants) are either speckled or virtually covered with craters, but I've never heard mention of actually seeing one of these impacts happen. At a basic level I'm curious if we've ever actually directly seen one, but what would be even better is if there's a publicly-available video of it happening.