Hercules cluster

From Tardis Wiki, the free Doctor Who reference

The Hercules cluster was a cluster of groups of stars, one of them being the Messier 13 group. In 2079, the Cybermen caused Hercules 208 to go nova in their plan to attack Space Station W3. (TV: The Wheel in Space [+]Loading...["The Wheel in Space (TV story)"])

Behind the scenes[[edit] | [edit source]]

It is not entirely clear what the Hercules cluster is meant to be here. In the real world, the Hercules constellation contains the Messier 13 star cluster, also known as the Hercules Globular Cluster, and located in the Milky Way. Also located in the Hercules constellation is the the Hercules Superclusters of galaxies, containing the Hercules Cluster. The Hercules cluster is likely a star cluster, which would discount the two latter options. The Wheel in Space appears to suggest that the Messier 13 group is a part of the Hercules, which would therefore suggest that the cluster refers to the constellation.