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" ...

French astronomer Charles Messier's list of the best and brightest deep sky objects is popular with skywatchers of all experience levels. During the new moon period in early spring each year, it's ...

The Messier marathon is an activity that’s been popular with astronomy clubs since the 1980s. It’s a test of endurance and skill to view each of the 109 deep-sky objects in French comet-hunter Charles ...

If you look to the east at night with a telescope this week, you may see a bright cluster of stars with a powerful name and a discovery story that dates back to the 18th century. The cluster is an ...