I suppose if the ancients were undergoing pandemic and this comet appeared in the sky, there might be a lot of hand-wringing over this symbol of celestial displeasure. As it happens, Comet NEOWISE is only about three miles wide. Quite a surprising light show for something so relatively small in the universe. My favorite image so far is this one above the Golden Gate Bridge.
No danger of hitting the Earth. If it did, it wouldn’t be nearly as bad as the dino-killer of 66043000 BC. But it would be worse than a pandemic, that’s for sure.
A comet is hardly a sign of anything more than a random city-sized chunk of ice and dirt. Things like this float around the universe everywhere. We know so little about them.