Some my say this belongs in the ASB forum, but I think that it is within reason to believe that in the chaotic nature of the universe, that Haley's Comet could have had its orbit shifted just slightly so that it impacted the Earth in the year 1066.
What would be the effects? I assume it's not big enough to cause a mass die off.
What would be the effects? I assume it's not big enough to cause a mass die off.