"Deep Sky Companion" at the Cahill Center for Astronomy and Astrophysics. Credit: Lia Halloran For her latest exhibition, called “Deep Sky Companion,” artist Lia Halloran was inspired not by the ...

It’s been six months since astronomy clubs around the globe hosted events for the Messier marathon. The goal of this single-night observing challenge is to catch all 109 deep-sky objects in French ...

Anyone spotting a globular star cluster like M13 for the first time through an amateur telescope will recognize a fascinating white spot, which at first glance could also be a comet without a ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. If you spend any time with astronomers, sooner or later, you'll hear them use the phrase "M" ...