MadSci Network: Astronomy |
We hear a lot about Near Earth Objects, and how much damage they could inflict -- but most scenarios have impact zones between about 60N and 60S. Could a major NEO (say 1km) land in the Circumpolar Current around Antarctica? Or maybe in the North Atlantic between Iceland and England? So where will meteoroids NOT impact this planet?
There is no place on Earth that is not regularly struck by meteorites, and there is no place on Earth that is protected from larger impacts by comets or asteroids. There is gravimetric evidence of asteroid and meteoroid impacts in the Arctic Ocean and in Antarctica which have occurred in the last million years (meaning that those areas were at their current high latitudes).
There may be very slight latitude biases for impacts based on the orbital distribution of asteroids, but it is safe to assume that to a reasonable degree, the chance of an asteroid hitting any particular location on Earth is about the same as it hitting any other.
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