Xeros

Xeros was the home planet of the Xerons. The Space Museum of the Morok Empire was located on Xeros. (DW: The Space Museum)

Geography
The geography of the planet was dusty and montanous planet, which was described by the Doctor as 'dead' for its advanced stage in erosion of a rock that was crumbling when touched by the examining Doctor (DW: The Space Museum).

History
The planet was in some point in time attacked by the Morok Empire, which their home planet of Morok was three light years away. The Moroks took over the planet for many decades creating a museum for their past and present achievements of their galactic conquests. It was noted as the best museum in the galaxy at the time with many vistors from all over the Morok Empire.

The Moroks intercepted the peace loving Xerons who inhabitated the planet peacefully, focusing on knowledge and science, for years when the Moroks conquered and either killed or sent the Xerons to work all over the galaxy once they were old enough to go. Although, Xeron children were left by the Moroks as they posed no threat to their rule.

When the First Doctor and his companions arrived on the planet, planet, the Xerons were preparing to revolt. The doctor and his companions helped the Xerons reclaim their planet from the Morok rule. (DW: The Space Museum)