Editing Joshua Pawlicki's Explanation of How It Works (section)

===''Space Fight''===
Ah, finally, the most inexplicable topic of them all. The big problem with space travel is not losing energy to friction. It is quite simply the dog-gone massive distances involved. For short range travel in space (between moons, orbit, etc), one would use the reaction drives to save on energy (that will be expanded on in the next section). Reaction drives are simply your atmo thrusters in rocket mode. The problem is the amount of gas you're dumping into space while doing it.
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The key thing about space flight in the 'Verse is that it is unneccessary to go faster than the speed of light: star systems are very close to each other. However, you still need to go pretty darn fast, and there's one way to due that: The pulse engine. Due to the gravity drives (in a process later explained as inertia reduction, see Gravity Drive), one can effectively create a localized field in which the speed of objects can be accelerated greatly. Detecting someone who is moving in another inertial reduction field is tricky, but can be done pretty well by computers, although it's not a perfect science. The key to it lies in tracking the fore and aft parts of electromagnetic radiation exiting the inertial field of the other ship. The pulse engine is basically a really big rocket that provides a huge burst of acceleration within this field. It is more efficient than the pod rockets because some of the excess heat is converted into energy to power the localized gravity drive fields (see Gravity Drive).
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