Coronagraphs are telescopes equipped with an occulting disk to block out the overwhelming radiation emanated from the visible surface of the Sun, along with optical stops and filters that are ...

This skywatching quiz will test your knowledge of how eclipses, when to see them, and what makes each one so spectacular. When you purchase through links on our site, we may earn an affiliate ...

Earth will see a deep partial solar eclipse on Sept. 21 — here's who can watch and when. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking ...