There's trouble in paradise as Christmas evening in the Cydonia bunker turns ugly. Alcohol may be the culprit. But equally, the blame may lie with suffering a whole day of pretending to like one another and f***ing Christmas songs!

So, while tensions rise and arguments flare, Ralph, Paul and Jen run through the memorable space and astronomy events of 2017 and look forward to the treats in store for 2018.

Then there's the small matter of John's annual outtake reel specifically designed to embarrass the hosts and push the bounds of decency as far as politeness will allow!

Main music courtesy of Star Salzman

Additional free music archive tracks:

• Silent Night by Hyson
• Christmas on Mars (Dance Mix) by Spinningmerkaba