Black Holes

A Black Hole is a collapsed star. Black Hole systems are rare, but can pose significant dangers or at least obstacles to spaceship traffic, because they tend to swallow ships.

Black Holes are rated from I to III, according to their gravity. A Class III black hole pulls every object (ship, missile, etc.) towards itself with a constant speed of 3,000 km/s (yes, it's simplified physics). That is offset by the ship's own speed, so a ship with a max. speed of 4,000 km/s could travel anywhere in the system, but only with a speed of 1,000 km/s. That might become a fuel problem, bacause the ships are still traveling at full power.

If the pull of the black hole is greater than the ship's speed, then the ship's speed becomes negative and it is slowly pulled into the singularity's event horizon, which is a fancy way of saying it is gobbled up.