I've been wondering if, in the Alien franchise, humans have been colonising any other planets or moons in our "home" solar system. We have many different stories where people are somehow overrun by Aliens (e.g. on the moon LV-426), but I’ve never seen anything about our solar system.

I can only assume that humans harvest ore and minerals from different planets of our solar system.

I'm interested in canon and non-canon sources.

  • You may want to include what level of canon you accept? Do you include all? For instance, the early Dark Horse Comics releases actually become pretty valuable for a decade or more and had at least one story on Earth. Aug 14, 2017 at 12:14
  • 2
    I don't see much likelihood of sending ships to the stars without first colonizing at least a few bodies within the solar system. It's a question of whether those producing the various sources (books, comics, movies) have mentioned them.
    – Zeiss Ikon
    Aug 14, 2017 at 12:18
  • @MeatTrademark Yes, I include all sources of information. I'm preety new to Alien franchise and I'll definitely check out The Dark Horse Comics.
    – Haseoh
    Aug 14, 2017 at 12:23

1 Answer 1


Yes, Luna is colonized (perhaps even terraformed), and possibly Mars as well.

Our best source of canon here is the comic Aliens: Defiance, where the Lunar colony of Tranquility Base is briefly shown:

enter image description here

We have some other tidbits of more questionable canonicity as well.

This screen on the 2010 Alien Anthology Blu-Ray box set also claims that Weyland-Yutani has a base/HQ in the Sea of Tranquility on Luna:

enter image description here

In the special feature "The Weyland-Yutani Inquest: Nostromo Dossiers" on the Alien Anthology Blu-Ray box set, it's even revealed that Ripley was born on another Lunar colony called Olympia:

Warrant Officer USCSS Nostromo
Sex: Female [Natural]
Nat: United Americas
DoB: 7 January, 2092
PoB: Olympia/Luna-UA


7 Jan 2094 – 18 April 2110
Spends childhood in lunar quarantine facility during outbreak of XMB virus on Luna. tests negative for XMB, [Medscan CERT#90156E].

Note that these crew dossiers contradict the dossiers seen in the background of the scene in Aliens where the Company interrogates Ripley (although Ripley's dossier here doesn't mention her birthplace, so that's not directly contradicted), so the canonicity isn't clear cut. While in most considerations of canon the main series movies would have precedence, the Aliens dossiers contain several details that are inconsistent with other canon facts, like Ripley's birth date (listed as "03", presumably 2103, compared to 2092 as quoted above) and other dates (Dallas's departure from Gateway Station). They also contain obvious in-jokes and easter eggs (like the names of ships).

If you consider a Prometheus marketing website as canon, Luna was not only colonized, but also terraformed, beginning in 2031. According to the same website, Luna is not the only colony in the Solar system: Mars was terraformed not long after. And yes, the same website claims that there is mining and refining going on on Luna.

  • That's what I had been looking for :)
    – Haseoh
    Aug 18, 2017 at 5:56

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