Comets SWAN and Lemmon will both swing by Earth and appear bright in the sky near the end of October. Here’s how to see them.

It was a week for the history books — and one buyers believe will resonate with customers, despite economic headwinds.

Comet Lemmon and Comet SWAN will be closest to Earth as a new moon sets up prime viewing conditions. Add in a meteor shower and we may get spectacular sky gazing.

Swann explained how researchers put together computer-generated controlled climate experiments, which she then analyzed and ...