Spacenoology

So we write our version of the technological base of the resettled within the visible universe … eleven-billion years ago, users of super-advanced peptide-nucleic technology.

And summarizes the scientific basis for films. Here, for example - the series “H2O - Just Add Water”:
In the film - the mystic, the magic that is not explained theoretically, because the film can hardly be called weird, it’s just fantasy. But all you can quite clearly explained our position Spacenoology.
It is only necessary to develop the main idea and make some assumptions.
Creatures created as a peptide-nucleic acid technology have remained reasonable, after many billions of years. This helped a special way of their existence - from time to time, stopping their huge, stuffed wise peptide-nucleic technological gadgets ships in one way or another planetary system in a small star of the discharge the main sequence, they built a second similar ship accurately, doubling the population was divided in half between old and new, and flew in different directions, attaining near-light speeds.
That they use for acceleration and deceleration? For an explanation made the assumption: these creatures are well mastered technologies of neutrinos emitted by nearby stars.
Neutrinos are known to be taking away from the bowels of an enormous star power, simply fly through planets, stars, without reacting with their substance, though it there and not here. But: if for some nuclear transformations there is a particular situation, in which neutrinos are created, then there must be such a configuration, when it can be captured or reflected, simply, this configuration does not normally arise. But our space being able to quickly and effectively to create such a configuration, the driving distance nucleon structure of atomic nuclei. (It is this particular technology, by the way, it can be justified as remote control of water - as it is an additional useful feature). Dispersal of ships they organize, using special, wide neutrino-active lenses that are permanently on the surface of planets, or a dynamic lens, floating in space. These lenses projected beam of neutrinos at a special neutrino-active device vessel. Well, a ship using this bunch, quickly selects a neutrino energy of motion and accelerated to near-light speed, or gives the neutrino self-energy movement and slows to near-light to the planetary speed …

Scouts at the same blyudtsevidnyh probes and shuttles (nano-scouts at the nano-probes and nano-Shuttle) flies, using counter-neutrino beams, one of which comes from the star (the sun), and another - from a special reflector on the ship, which is usually fixed in some Lagrange point in one of the planets …

So, assume that the Moon in the Lagrange point was located a super alien ship, having at their disposal advanced technological methods of trapping and reflection of solar neutrinos. Being in the Lagrange point, the ship rotates around the Earth in sync with the moon and almost because it is not visible from Earth (except from an orbiting Hubble Space Telescope, but no one had guessed to put it in the right direction …). By the way, the crew of an American lunar missions just did not notice a lot of nano and conventional shuttles, which are quickly removed the components of the stationary neytrinoaktivnoy lens from the lunar surface … But maybe something out there and see? ..

Now, summing up the database! Several trillions of nano-paratroopers, built in the membranes of all body cells of the target girls from the series, capable of both changing the configuration and the morphology of the organism, and to provide all these magic tricks … By the way, the efficiency of incorporation into the body and leaves the body best suited commandos at the time of full moon at the zenith (especially during a lunar eclipse), because a special parabolic reflector for the neutrino-moon alien ships in precisely this moment can create the best reflected by the neutrino flux at the site of the landing: this stream will be strongly opposing relative to the solar neutrinos. And to control the shuttles are very important … But the most favorable (though rarely, about once in fifty years …) for nano-commandoes is a situation where on one line are Venus, Earth and Moon, because then the system is activated still huge neytrinoaktivnaya lens in the Lagrangian point of Venus. This lens is designed to provide the interstellar launch a ship, so that the neutrino flux from the upstream of the-lunar spacecraft obtained a particularly tight …

Alien, of course, is competent in peptide-nucleic technology of terrestrial organisms, because the whole ship with all its twists, too, is built on the same technology! Therefore, make a complete transformation of the body per-second lady in a half-fish, hiding in the fish’s tail on her clothes and mobile phones, and will finish the required components of atmospheric carbon dioxide and water, for nano-commandos - utter nonsense. So just make a flash cooling to a temperature of almost super-conductivity of the object selected by a mermaid, or heat it up to a temperature of solar plasma - organizing something or other interaction with the solar or guidance from a dedicated space reflector neutrino flux.
And, incidentally, in the same way one can quite plausibly justify the theoretical basis for the movie “Starman”:
You can also develop the plot, like the story of Stephen King’s “Firestarter 2″.

However, the creation of a fantastic story ideas and wrap them theoretical justification is, of course, the particular case the authors of these stories.
But now I can write your own fantastic tale, and I have an excellent theoretical justification! Hooray!
So, I write:

It took almost a century since the discovery in burdzhessky black shales of the Rocky Mountains prints graceful chord beings who lived a half-billion years ago … But who would have thought that this little creature, dubbed Pikaia Gracilens - only the larva that grows into a real mermaid! And what on earth in the Cambrian period was the whole of humanity Homo Aquaticus! And that that Homo Aquaticus incredible way belonged to the same species as Homo Sapiens! And once the representatives of this ancient humanity were in our time! .. >>>>>