A quote: "They point out that nobody else on the planet seems to have seen this comet passing in front of the Sun, even though the nearest observatories in those days were just a few hundred kilometers away. That can be explained using parallax."
It can also be explained by the simple fact that (a) not many observatories specialize in observing the sun even now, and (b) the observation may only have lasted a few hours (as with this year's Venus transit). Remember Occam's razor -- the simplest explanation is to be preferred.
It can also be explained by the simple fact that (a) not many observatories specialize in observing the sun even now, and (b) the observation may only have lasted a few hours (as with this year's Venus transit). Remember Occam's razor -- the simplest explanation is to be preferred.