FTL (Faster Than Light) Travel

Faster-than-light drives use element zero cores to reduce the mass of ship, allowing higher rates of acceleration. This effectively raises the speed of light within the Mass Effect field, allowing high speed travel with negligible relativistic time dilation effects.

Starships still require conventional thrusters (chemical rockets, commercial fusion torch, economy ion engine, or military antiproton drive) in addition to the FTL drive core. With only a core, a ship has no motive power.

The amount of eezo and power required for a drive increases exponentially to the mass being moved and the degree it is being lightened. Very massive ships or very high speeds are prohibitively expensive.

If the field collapses while the ships moving at faster-than-light speeds, the effects are catastrophic. The ship is snapped back to sublight velocity, the enormous excess energy shed in the form of lethal Cerenkov radiation.

As positive or negative electronic current is passed through an FTL drive core, it acquires a static electrical charge. Drives can be operated an average of 50 hours before they reach charge saturation. This changes proportional to the magnitude of mass reduction; a heavier or faster ship reaches saturation more quickly.

If the charge is allowed to build, the core will discharge into the hull of a ship. All ungrounded crew members are fried to a crisp, all electronic systems are burned out, and metal bulkheads may be melted and fused together. The safest way to discharge a core is to land on a planet and establish a connection to the ground, like a lightning rod. Larger vessels like dreadnoughts cannot land and must discharge into a planetary magnetic field. The ship passes the charge from the drive core to the exterior armored hull, then dives into the magnetic field.

As the hull discharges, sheets of lightning jump away into the field, creating beautiful auroral displays on the planet. The ship must retract is sensors and weapons while dumping charge to protect damage, leaving it blind and helpless. Discharging at a moon with a weak magnetic field can take days. Discharging into the powerful field of a gas giant may require less then an hour. Deep space facilities such as the Citadel often have special discharge facilities for visiting ships.

New space travelers ask, “What does it look like outside a ship moving at faster-than-light speed?” Part of the answer can be seen in a simple pane of glass. Light travels slower through glass then it does through open air; light also moves slower in conventional space then it does in a high-speed mass effect field. This causes refraction – any light entering at an angle is bent and separated into a spectrum. Objects outside the ship will appear refracted. The greater the difference between the objective (exterior) and subjective (interior) speeds of light, the greater the refraction.

As the subjective speed of lights is raised within the field, objects outside will appear to red-shift, eventually becoming visible only to radio telescope antennae. High-energy electromagnetic sources normally hidden to the eye become visible on the spectrum. As the speed of light continues to be raised, x-ray, gamma ray, and eventually cosmic ray sources become visible. Stars will be replaced by pulsars, the accretion discs of black holes, quasars, and gamma ray bursts.

To an outside observer, a ship within a mass effect drive envelope appears to blue-shifted. If within a field that allows travel at twice the speed of light, any radiation it emits has twice the energy as normal. If the ship is in a field of about 200 times light speed, it radiates visible light as x-ray and gamma rays, and the infrared heat from the hull is blue-shifted up into the visible spectrum or higher. Ships moving at FTL are visible at great distances, though their signature will only propagate at the speed of light.