We’ve been predicting eclipses for over 2000 years. Here’s how.

It's amazing what centuries of data can do. Solar eclipses have a long history. Pixabay Imagine. You are an ancient human and your reliable and faithful sun suddenly and unexpectedly goes dark. This terrifies you. You think, 'What if it never comes back? Oh gods, WHAT HAVE WE DONE TO DESER...oh, it's back. Phew.' But then,…