The Universe of Honor Harrington

(A) General Wormhole Mechanics:

Wormhole junctions consist of a central wormhole (referred to as the "wormhole nexus") and its associated termini (referred to as "secondary termini"). The nexus is connected to each terminus by a unique pattern of gravity waves, one pattern outbound and one inbound, normally referred to as the "terminus route." Each junction has an absolute tonnage ceiling, the maximum mass which can be put through any given terminus (including the central nexus) simultaneously, but the limit applies individually to each terminus route.

Traffic may be routed from the central nexus to any terminus and from any terminus to the central nexus, but direct routing between secondary termini is impossible. The tonnage limit can be moved simultaneously over different terminus routes.

Each time a vessel or vessels move along a given terminus route, the route "destabilizes" for a brief period, during which it cannot be used by other vessels, and the destabilization time is proportional to the mass being moved along the route. Thus the more massive the transit (ie., the larger the number of vessels involved) the longer it is destabilized.

The central nexus is thus the most flexible but, in a sense, the most vulnerable (militarily speaking) of the junction termini. It may dispatch an assault force equal to its tonnage limit to any or all of its secondary termini virtually simultaneously, but will then be unable to send reinforcements until the route(s) used stabilize once more. By the same token, an adversary in possession of two or more secondary termini of the same junction may use each of the termini it controls to send the full tonnage limit of warships into the central nexus. Hence the Star Kingdom of Manticore's extreme sensitivity to the possibility that any hostile power (such as the People's Republic of Haven) might obtain control of more than one terminus of the Manticore Junction.

(B) The Manticore Junction:

The Manticore Wormhole Junction was discovered in 1585 pd (98 al). The Manticore Junction lies 412 LM from Manticore A and has the distinction of being the largest so far discovered, connecting to no less than five other star systems: Sigma Draconis (Solarian League), Gregor (Anderman Empire), Trevor's Star (People's Republic of Haven), Phoenix (Phoenix Cluster), and the most recently discovered (1856 pd/254 al) Basilisk System. In addition, the Star Kingdom's astrophysicists are currently working with the latest survey data in the belief that the junction connects to at least one and possibly more additional termini which have yet to be isolated.

The wormhole junction has been a bonanza for the Manticoran economy, attracting a huge concentration of shipping. Unfortunately, it has also made the kingdom a player, will it or won't it, on the galactic stage, as the imperialistic and military implications of the junction are quite clear to all concerned. For obvious reasons, the Navy budget has received considerable attention in the last 50-odd T-years, and the kingdom has laid claim to its first extra-system planet (Medusa, a thoroughly unpleasant, marginally habitable planet in the Basilisk System) to safeguard that terminus of the junction. (Prior to 1901 pd, Manticoran diplomats took great care to avoid saying just whom they were safeguarding it against, but Basilisk's relative proximity to the People's Republic of Haven made that fairly clear, and there is reason to believe the Kingdom got away with the annexation so easily only because Haven was occupied with other matters when the Basilisk terminus was first discovered.) As Medusa is inhabited by a sapient alien species, this embroiled the kingdom in questions of aboriginal rights and protection, and the increasing pressure of Havenite "merchants" there for "legitimate trade with the natives" (who have very little worth trading) further complicated an already complex situation.