# Class S05 Brown Dwarf Star

    These aren't really stars; they are closer to the gas giants you will often find orbiting other stars, and as such give out very little light. They do not have enough mass to produce the gravity necessary to support a solar-system, so don't expect to find planets around them. Occasionally, they do support one or two objects, but because of the lack of light, you won't see much if you land on them. Try not to get lost... Oh, one other detail; it's rare, but not unknown, for Brown Dwarfs to emit lithium ions. The reason is that they're not hot enough to consume their heavier elements, and so these are "squeezed" from their outer layer. However, there is rarely enough to fuel a Stardrifter.

# Class S06 Grey Giant Star

    These are fossil stars, the remains of novae and super-novae. They are cold and dead, but have a very useful property: they emit lithium ions. Not all class S06 stars will be suitable for lithium scoping, as about fifty percent of them emit Li++, which you cannot use. Search around a bit; if you find stars suitable for lithium scoping, it's a good idea to name them so you can return to them later if you run low on fuel.