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Stars and stellar evolution
Hercules Globular Cluster

Great Globular Cluster in Hercules, Hercules Globular Cluster, M13


Globular cluster containing more than a hundred thousand stars


13 billion years


Hercules constellation, Northern celestial hemisphere

Distance from Earth

25,000 light-years


145 light-years across

The central region of M13.

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"Fast Facts: Hercules Globular Cluster" is a table that lists the name, description, location, size, and distance of the globular cluster from Earth. An image of the cluster is included.

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Adaptable, at teacher's discretion
How to use in the classroom

Use this resource as:

A source of information. Read the table to find out about this object.

A mapping activity. Locate the cluster's associated constellation on a star map.

A large-number recognition activity. Have students look at several Fast Fact tables, including this one. Ask them to place the objects described in the Fast Fact tables in order, starting with the object closest to Earth and ending with the one farthest away.

An inquiry tool. Have students write down questions they would like answered about the image and the information in the Fast Facts table.

An engagement tool. Involve students in a discussion.

Related materials

HubbleSite press release: "A Celestial Snow Globe of Stars"

Amazing Space resources by topic: Stars and Stellar Evolution