system could also be used in those spacecrafts which for some
reason is not deemed appropriate to use centrifugal system.
SPATIAL RINGS
Compact cities would be located in a space ring at a distance in
which the period of translation of the same around the planet or
moon were equivalent to twenty four hours, thereby day length
would like on the surface.
From my point of view, the best way to place the cities would be
in a sort of chain in which the cities would line up around the
equatorial zone, this place would be about 36,000 kilometers from
the planet's surface, on call geostationary orbit. Space cities
would place its top toward the sun and thus would appear that
they were on the earth's surface, all occupy the same orbital plane
relative to the earth, cities float separated from each other by an
amount of not excessive kilometers. Some distance seem that
were forming a spatial ring. On earth would be about 1,000 towns
separated each by about 100 kilometers.
To communicate with others only a few cities would require
transport ships put in a different orbit to the space occupied by the
ring and thus would advance or recede with respect thereto. If
move of the planet ships recede with respect to the cities, if they
approached the planet ships would move about them, when they
reached the city they would want to go occupy the same orbital
zone and then stops would be found regarding they.
In order to avoid loss of planetary resources in space ships
communication could be propelled photon energy that is pure
energy collected from the sun, this energy has little angular
momentum, but space is abundant and solves the problem of
having to take the planet gases for use in propulsion.
Other ways to solve the problem without resorting to the planet
and get reaction mass would indefinitely.
Use meteorites collected in space propulsion But use them would
be inconvenient because the space sully also to accelerate engine
would become uncomfortable projectiles.
Use space gases: A collecting devices would collect gases own
space, which would then be used as a reaction mass. There are