An artificial gravity well is exactly what it sounds like: a mass shadow that doesn't come from an actual mass. Using the same graviton generation technology that powers subspace drives and gravity drives, it's possible to project a region of curved space-time that mimics the gravitational signature of a large natural body — a planet, a star, or in one notable case, something considerably worse.
The physics are straightforward. If you can curve space-time tight enough to create a subspace pocket, you can curve it in the opposite direction — outward instead of inward — to create an artificial mass shadow. Same graviton generators, same grav vanes, same fundamental technology. The difference is scale, power requirements, and what you're trying to accomplish.
Artificial gravity wells are generated by graviton projectors — typically arrays of high-powered grav vanes driven by dedicated power plants and controlled by sophisticated computers. The generators project a field of curved space-time into a target area, creating the gravitational equivalent of a large mass without the mass itself being present.
The field can be shaped with considerable precision. A skilled operator with good equipment can create corridors through the field, adjust its intensity in real time, expand or contract its radius, and even create multiple overlapping fields with different characteristics. The computing requirements for this fine-grain control are substantial — maintaining a stable, shaped gravity well requires constant calculation and adjustment, which is why interdictor ships dedicate most of their internal volume to supercomputers.
The strength of the field determines what it can affect. A weak field is little more than a navigational nuisance — ships' mass shadow detectors will flag it, pilots will route around it. A strong field mimics a planetary mass shadow closely enough to make subspace transitions physically impossible within its radius. That's where things get tactically interesting.
The primary military application of artificial gravity wells is interdiction — the projection of a mass shadow strong enough to prevent ships from entering or exiting subspace within the affected area. Ships in normal space cannot dive. Ships in subspace cannot surface inside the field. For the duration of the interdiction, the affected area is locked down.
This is the same phenomenon that makes subspace travel near planets and stars dangerous. Natural mass shadows force ships to dive and surface at safe distances from large bodies. Interdiction simply creates that effect artificially, wherever you want it, whenever you want it.
System lockdown is the textbook use case. An interdictor arrives in a system, spins up its gravity generators, and the system is sealed. Defenders can't retreat. Reinforcements can't arrive. The attacking force has turned a space battle into a cage match. This is why interdiction is considered a prerequisite for any serious invasion — without it, the defender can always run, and reinforcements can always come.
Trapping fleets is the offensive corollary. If you know an enemy fleet is in a system, dropping an interdiction field before they realize what's happening turns a potential engagement into a guaranteed one. Combined with superior force, it's a decisive strategic play. Combined with inferior force, it's a mutual death sentence — which is why wise commanders confirm the tactical situation before committing to interdiction.
Preventing reinforcements works in the other direction. An interdiction field doesn't just trap ships inside it — it prevents ships in subspace from surfacing within the field. An enemy fleet waiting to jump in finds itself unable to arrive. This buys the interdicting force time to deal with whatever's already in the system before the cavalry shows up.
Security perimeters are a subtler application. Some installations use interdiction fields as tripwire systems — dormant generators that activate the moment intruders are detected, trapping them in normal space and preventing escape via subspace. The intruders are stuck, and the security force knows exactly where they are.
Interdiction fields aren't all-or-nothing. The generators can shape the field to leave narrow corridors open — specific approach vectors where subspace transitions remain possible. Ships with the right clearance codes and scheduled arrival windows transit through the corridor. Everyone else hits the wall.
Some high-security systems run gravity wells constantly, maintaining permanent interdiction with controlled corridors as the only way in or out. Arriving at or departing from these systems requires scheduling and clearance — you don't just show up. Unauthorized ships that attempt to surface inside the field simply can't, and ships that attempt to reach the system via normal space find themselves dealing with the kind of security apparatus that maintains a permanent interdiction field, which is generally not the kind of security apparatus you want to trifle with.
Interdiction is powerful, but not absolute.
Spin-up time. Gravity generators of this scale don't activate instantly. An interdictor arriving in a system needs time — roughly thirty minutes for a standard military interdictor — to bring its generators to full power and establish the field. That's a window of vulnerability during which alert defenders can escape or press an attack before the trap closes.
Fragile ships. Interdictors are purpose-built for one job, and everything else is sacrificed to that job. They're lightly armed, lightly armored, and absolutely dependent on escort ships for protection. A fleet that can get a clear shot at the interdictor can end the interdiction in a single volley. Every commander knows this, which is why protecting (or killing) the interdictor is often the central tactical problem of any engagement where one is present.
Destroying the ship drops the field. The moment an interdictor is destroyed, the field collapses. There's no residual effect, no lingering mass shadow. The generators stop, the field stops. Ships can dive immediately. This makes interdictors the highest-value targets in any battle where they're deployed.
Sufficient engine power. There are persistent reports of ships with exceptionally powerful subspace drives — or unconventional drive technologies — forcing a transition despite an active interdiction field. Whether this represents a genuine counter or simply operates at the margins of what the field can prevent is debated. Most fleet commanders plan as though interdiction is absolute, but the wise ones leave room for surprises.
Interdiction requires dedicated vessels. The gravity generators, power plants, and computing systems required to project and maintain a system-scale mass shadow are too large and power-hungry to be a secondary system on a general-purpose warship. Interdictors are built for this one purpose, and they're built around their generators the way a gun is built around its barrel.
A standard interdictor is a cruiser-sized hull that dedicates most of its internal volume to gravity generators and the supercomputers needed to maintain field stability. Weapons are minimal — point defense and maybe a few light turrets for self-defense. Armor is adequate but not impressive. The crew is small, because most of the ship is machinery, not people.
Heavy interdictors represent the extreme end of the concept — ships designed to hold star systems indefinitely. Part interdictor, part logistics cruiser, they carry enough supplies, fuel, and armament to sustain a long-duration siege. Unlike their lighter cousins, heavy interdictors are decently armed, because they're expected to operate in contested space for extended periods.
| Class | Type | Hull Code | Faction | Dimensions | Crew |
|---|---|---|---|---|---|
| Einstein | Interdictor | ID | League | 830m x 440m x 600m | 60 |
| Shadow | Interdictor | ID | Terran | 710m x 600m x 258m | 50 |
| Fermi | Heavy Interdictor | IDH | — | — | — |
At the far end of the artificial gravity well spectrum sits something that makes interdiction look like a parlor trick.
[CNK Prime][] is the first — and so far only — artificially created black hole. Located at the center of the Corona Noir Ki system, it was generated using the same fundamental physics as any artificial gravity well: graviton generation to curve space-time. The difference is that CNK Prime's creators curved it hard enough, and sustained it long enough, for the effect to become self-reinforcing.
It is, in astronomical terms, a small black hole — too small to sustain itself indefinitely without help. Graviton generation stations around its perimeter and regular mass feeding from nearby dead systems keep it alive. The CNK Institute maintains it as the centerpiece of their research, and it serves as a stark reminder of just how far this technology can be pushed when someone decides the safety margins are suggestions rather than rules.
The fact that people have apparently been inside CNK Prime and returned raises questions that most physicists prefer not to think about.
Interdiction exists because FTL travel creates a tactical problem: if ships can always just leave, battles become optional. Interdiction makes engagements committal. Once the field goes up, you're fighting whether you like it or not, and the interdictor becomes the most important ship in the battle — whoever controls it controls whether the fight continues.
The corridor control concept adds texture to peacetime — secure systems where you need clearance to arrive give us checkpoints, bureaucracy, smuggling challenges, and all the narrative friction that comes from controlled borders. It's the difference between "space is open and free" and "space has geography that matters."
CNK Prime is included here because it's the logical extreme of the same technology. Interdiction and black holes are both artificial mass shadows — one is tactical, temporary, and reversible; the other is strategic, permanent, and terrifying. Same physics, different ambitions.