Phase Difference Space
The science of Spatial Alternation Dynamics is based on the theory
that our universe phases in and out of existence, blinking on and
off every 1/48th second. According to the hypothesis, our entire
existence disappears every 1/48th second, to be momentarily replaced
with another dimension, known as Phase Difference Space. Since Phase
Difference Space is 1/240th the size of our own universe, it is
possible to travel 240 times as fast within it, assuming that one
can both enter and exit the new dimension at the appropriate times.
The devices used to
enter the new dimension are known as Phase Difference Space Gates.
By entering them, travel times are greatly accelerated, reducing
the Earth-to-Mars transit time to between 13 and 24 hours. These
future equivalents of 20th century Earths highways
are operated by the Gate Public Corporation, which charges a toll
on all traffic.
The invention of the
gates made it possible to deliver vast amounts of materials and
energy (including sunlight itself) to distant planets, consequently
making it immensely easier to make these worlds suitable for human
habitation. This process is known as terraforming.