Tranquility Base is what would happen if we Brits had won the space race (I know, we weren’t in "The" space race) — it’s an organisation that employs some eccentrics with brilliant minds but not necessarily any common sense, far too few highly efficient but under-paid workers who actually keep the place running, and all overseen by a bloated administrative layer that couldn’t organise a… uh… bonfire in an explosives factory.
Besides Tranquility Base itself, there are ancillary bases on the moon, as well as other planets and moons in our solar system. In all there are twelve colonies, plus Earth, which form a single government unit which is a member of the Galactic Federation.
The subject matter is mostly geeky science-fiction, although it also covers pop-culture, literature and anything else that takes the author's fancy.
The comic was first published in August 2007, but went on hiatus (except for one special episode) from the 18th July until 26th September 2009. It's now back twice a week (Wednesday and Saturday), though!