Doctor Who Series 10: 11 Easter Eggs & References In 'Oxygen'
3. Ganymede Systems
It's never drawn attention to, but you can see that the space suits of Chasm Forge are emblazoned with the logo for Ganymede Systems. This could easily be a simple namecheck of one of Jupiter's moons, but it also might be the most obscure nod of the episode to a classic Doctor Who story.
In Tom Baker-starring adventure Revenge of the Cybermen, a human-controlled space station called the Ganymede Beacon is mentioned at one point. Could the Beacon and Ganymede Systems be linked?
We might be clutching at straws here but, knowing Doctor Who writers' love for inserting obscure references, we might be on to something.