Space/Science — HabitableZone

Space/Science » in reply to "as is well known"

I don't know about that

Seems like I read somewhere that while comets are a very low percentage of potential impactors they represent about 20 to 30 % of the potential death risk due to their large size and speed. It's not clear to me whether the 1% number quoted above was % of impact frequency or % of potential deaths.

Are you certain?

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