Gas Giant
A large planet with an extensive atmosphere of hydrogen and hydrogen compounds.
Starships fuel themselves by diving
into this atmosphere and skimming hydrogen from this atmosphere. The only
other methods available for refuelling are 1) dipping water from oceans,
2) melting it from icecaps, and 3) buying it at a base or starport. Jupiter, in the Sol system, is an example of a gas giant.
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