Night Sky's Great Globular Cluster Visible In Telescopes

A fascinating deep sky object called the Great Globular

How often in looking through books

The Great

Messier was

We will come back to Messier in a

Celestial Chrysanthemum

To locate Messier 13, look toward

A keystone is the stone atop an

Actually, it was not Messier, but

Located at a distance of about

Messier first saw the cluster in

Today, if you use good binoculars

With a 4 to 6-inch

?In his Celestial Handbook, the

He Couldn?t Care Less

Many of the objects listed in Messier?s

Yet, there is absolutely no reason

But his catalogue, the by-product






Joe Rao serves as an instructor and guest lecturer at New

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Joe Rao
Skywatching Columnist

Joe Rao is's skywatching columnist, as well as a veteran meteorologist and eclipse chaser who also serves as an instructor and guest lecturer at New York's Hayden Planetarium. He writes about astronomy for Natural History magazine, the Farmers' Almanac and other publications. Joe is an 8-time Emmy-nominated meteorologist who served the Putnam Valley region of New York for over 21 years. You can find him on Twitter and YouTube tracking lunar and solar eclipses, meteor showers and more. To find out Joe's latest project, visit him on Twitter.