An old maxim of naval warfare states that a shore battery always has the advantage over an attacking ship because the shore battery cannot be sunk. it follows that any weapon that can be placed aboard a ship becomes much more dangerous when built larger and placed on a planet.
All Frontier planets with a population rating of Moderate or Heavy, or those lightly populated planets with Industrial potential [1] have planetary defenses. These usually consist of laser cannons and missiles, but much larger ones than those carried by ships.[2] Planetary defense batteries can destroy a
ship at the fringe of the planet's atmosphere. If the ship tries to bombard the planet, incoming torpedoes and missiles will be neutralized easily by the planet's laser anti-missile defenses. Laser weapons fired from space cannot cause much damage on a planet's surface because the weapon's area of effect is so small.
Notes and References
- Star Frontiers: Knight Hawks Expansion Rulebook pp. 51-2