Portal Future Wiki
Portal Future Wiki

Portals are a common transportation technology in the Portal Universe of the Earth Girl series.


Portals work on the principle of "folding space" between the sending and receiving portals, so it only takes a step to travel hundreds or thousands light years. [1]

The maximum size a portal can be is 4.4 meters (abt. 14.5 feet) and by 2789 they have only successfully been able to create them up to 4 meters (abt. 13 feet) in diameter, determined by Jorgen Eklund who wrote Physical Constraints on Portal Development. More recently (to year 2789) Gaius Devon theorizes that portal dimensions can reach in excess of 16 meters (52.5 feet), which Fian denies as a possibility due to Gaius Devon's lack of proof and poor reputation.[2]

Traveling by portal is the primary means of transportation on all worlds. Frontier worlds often have only basic local portals for use, except in one location for off world travel.


Type 4 portal intolerance
Someone with this condition experiences extreme dizziness, headaches and nausea after traveling through portals, especially if they are portal more than once in a short period of time. This is corrected or at least tolerated after a three-month treatment course.
Amalie Roche in Frontier discovers that her headaches are a result of having Type 4 portal intolerance.
When Playdon and Jerez portal to Galahad in The Real Jerez Rivera, they have crossed several sectors on a Military pre-empt, and exhibit significant portal dislocation. The security guard, thinking they have travelled only locally, insists that they must go through medical checks as they clearly suffer from Type 4 portal intolerance.

Bio Filters

During the Thetis chaos year, the chimera from Thetis infested other planets via portals and brought humanity to the brink of annihilation. After the crisis, all portals had bio filters installed to ensure that only humans, approved creatures, and other approved organic material can travel through a portal.

Portal Types and Usages

Emergency Evac Portals

These are used primarily on Earth dig sites, though others may use them for various reasons. They are small, cheap, must be activated remotely, and lack the capability to change their settings. When activated they are locked open to a set destination. On dig sites, Dig Site Command activates and sets the destination of evac portals.

Standard Portals

Used for local travel around the same continent. These are the type of portal that were initially created and set up on nearly every street corner. By the 28th century, many of the wealthy have their own standard portals in their homes. These private portals are set up with security only allowing certain people to portal in, usually controlled by a DNA check.

Half Size portals are used on Solar Arrays to portal from the command center out to various locations on the "sails" or "wings", this facilitates repair work. They are used on the Arrays because the power emitted by a portal damages the solar panels, and the area affects varies as the cube of the portal radius, so using small portals minimizes the effect. [3]
Freight portals are just standard portals but a larger size.

Intercontinental Portals

These are predominantly used only on Earth as it is the only planet that has people on all five continents. All other planets of humanity only settle one continent.

Interstellar Portals

Are used for cross-sector and off-world travel. Establishing an interstellar portal connection is expensive, so most travelers take advantage of the block portal schedule system to lower the cost of their journey.

Interplanetary Portal

Interplanetary portals are used on Earth as a way for the solar array personnel to go from their accommodations to any of the solar arrays. They are limited destination portals so are set to only go to certain destinations.[4]

Atmosphere Jump Portals

Atmosphere jump portals are a linked pair, allowing planes to go a portal on land based to a specific point in/above the atmosphere where the linked portal is located. [4]

Drop Portals

Drop portals are the Military's most famous technology and the way they travel to unknown stellar systems. Drop portals look like rings of dust. They only last for five seconds and have a limited size and range. A drop portal is generated by a ship and exists simultaneously at the origin and the destination coordinates.


Interstellar communications is via portal. There is usually a significant time lag when sending and receiving cross-sector.

Transit Centers

Portal transit centers, or interchanges, are very busy as any transportation hub / station would be. They typically lock open portals to more common destination at set dates and times to maximise the number of travelers per portal connection. Travelling cross-sector may take hours to days depending on how well block portal schedules synchronise.

A few portals remain available for those with plenty of credits to select their own destinations and for pre-empt portal signals to bounce through.

There are three types of transit portals:

  • Local portals, travel within the same continent.
  • Special longer distance inter-continental portals (Earth only) [5]
  • Off-world and / or cross-sector (Interstellar) portals.

Orbital Ship Portal Network

Run by the Military. Only a few planets have enough air traffic flying cross-sector to have their own Orbital Ship Network or even one interstellar orbital portal.

Adonis, a major air traffic interchange, has two Orbital Portal transit areas with six interstellar orbital portals each.

"The Orbital Ship Portal Network allowed both Military and civilian ships to travel vast interstellar distances using conventional portals, instead of having to drop portal a few star systems at a time,..."

–narrative , [6]

References and Notes


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  1. Edwards, Janet. Scavenger Blood (Scavenger Exodus Book 2) (p. 381). Wallam-Crane Press. Kindle Edition.
  2. Edwards, Janet. Earth Star (Earth Girl series Book 2) (p. 67). Prometheus Books. Kindle Edition.
  3. Betha, Hestia 2781, Chapter 22
  4. 4.0 4.1 Edwards, Janet. Hestia 2781 (Drago Tell Dramis) (p. 124). Wallam-Crane Press. Kindle Edition.
  5. Edwards, Janet. Earth and Fire: An Earth Girl Novella (EGN Book 1) (p. 2). Wallam-Crane Press. Kindle Edition.
  6. Edwards, Janet. Hera 2781: A Military Short Story . Kindle Edition.