From the publisher blurb:
As your characters set off into the universe, the right backdrop - the star system or systems they're voyaging through - can help their story be told. It's like finding a home - the neighbourhood has to be right for you: Is it close to the shops? How does the neighbourhood look?
Is that smoke?
So the aim of this booklet is to give you a run-down on a realistic star system, centred on a small, flame orange, sun - in particular, how it would be experienced from an Earth-like planet in its habitable zone. The sun of this particular system is what is known as an L5 type sub-star, or brown dwarf - an object too small to fuse hydrogen like a regular star, but able to shine for a shorter time by fusing deuterium, or lithium, before slowly cooling to become something like a super-heavy giant planet. Despite this it can be bright enough to sustain a habitable planet for over a billion years. At the time of writing, astronomers have yet to come up with a classification system for star systems, so the nom-de-plume we offer here, for a system centred around a single such L5 sub-star is a ‘match flame system’ owing to the tiny central sub-star and its short lived shining phase.
Beyond the broad themes you can set specific details to your needs - for example the number and type of other planets and the galactic neighbourhood. The booklet goes into:
Combining star systems into clusters: p4
How to go off book with your sun and sky colours: p5
Travel within the system: p6
Visuals from an Earth-like planet in the habitable zone: p7
Sky colour: p7
Plant colour: p7
Opportunities: p7
Hazards: p7
Prompts: p8
Other sky phenomena: p8
Planets to populate your system with: (E.G. Water worlds, volcanic worlds): p9
Visual size of planets: p10
Galactic Settings for the system: (E.G. Galactic core, disk): p27
General notes: p34
Glossary of terms: p45