Instead of looking after aliens, interstellar radio using signals "Hello," say an alternative search strategy is easy to spy on all mega-engineering projects, an advanced civilization could be company. Veteran SETI astronomer Jill Tarter calls this strategy "SETT"-the search for extraterrestrial technology.
A new science proposing study by Duncan Forgan at the University of Edinburgh in Scotland and Martin Elvis at the Harvard-Smithsonian Center for Astrophysics in Cambridge, Massachusetts, we are looking for evidence of a very ambitious macro-engineering project: the wholesale mining on an asteroid main belt. The asteroid material can to build space colonies, solar power satellites, or perhaps even a whole "Ringworld," be reduced, such as science fiction author Larry Niven.
What's more, are precious metals in the high demand for technologies such as computers, high speed networks and mobile phones. So-called "green technologies" of the future, such as hydrogen fuel cells, will show a demand on scarce resources.
The unconsolidated debris from the birth of planets, asteroids offer a smorgasbord of elements and minerals for the harvest. Meteorite samples according to large amounts of gold, Platinum, iron, nickel, magnesium and silicon, among other elements, on asteroids are abundant.
Space wagon
We have already found asteroid belt around other stars. In fact, Epsilon Eridani has the star three nested belt. NASA's Spitzer space telescope was more productive crop from the thermal signature of the extraterrestrial asteroid belt.
A growing space Panel would civilization as asteroids discover a rich source of raw materials. You are the coal cars in a freight train of the planet.
But finding asteroid belt would be very difficult anomalies that would show convincing on the hand by aliens. First, we would have to assume that the civilization was so far advanced that it - on huge cost-built the transport infrastructure for getting back and forth to the asteroid belt. Advanced robots would have to lift anything heavy for mining and transporting asteroid material to space-based factories.
Forensic evidence could be caused by the identification of a chemical imbalance in the belt from the extraction of certain minerals and elements. Secondly, the system due to the dismantling of their larger asteroids might look odd. An unusual temperature distribution of drive belt could finally give large amounts of dust from mining.
They research forecasts that continued mining for long periods is artificially reducing the larger asteroids in the ruins system. All that would be what left would Pebble medium-sized and small dusty dirt. No space telescope presented the real asteroid could inventory sizes, but differences in the dust distribution can provide evidence.
Natural born killers
In Star Wars the Empire strikes back Darth Vader battle cruiser submitted to pulverize an asteroid belt, Han Solo and his Rebel Alliance to find friends. This short-term asteroid obliteration is certainly striking from a nearby civilization!
The problem is that unusual dynamic events caused by the influence of the at least one planet develop a disk in pulverized with more asteroids than expected. What's more is the Circumstellar cloud, of which the planetary system coagulated, may with unique chemical abundances difference began to significantly from our solar system have.
DNEWS VIDEO: ALIEN SPECULATIONThe bottom line is that asteroid systems may be as varied and unusual as the planetary systems they inhabit. Therefore could abnormalities alone do not conclusively prove the existence of the alien asteroid miners. Suggestive of the Astroengineering may be an oddball-looking asteroid belt to find, but it certainly would not it prove.
An intense program of SETI follow-up observations might look leak off signals for telecommunications, or it can be searches for planet Earth size in habitable zones in the vicinity of the asteroid belt. However, can a SETT which will find the fastest and most practical strategy for the extended life of Earth.
Is it two decades or more sufficient space telescopes extrasolar planets above we and looking for biomarkers to measure must close. And this data an idea will not give the native life is how evolved.
A space colonize civilization, perhaps no more than a Millennium to do advanced of us, something ambitious to that we can notice light years from Earth telescopes of modest size. Perhaps the proof is already astronomical; in our archives We recognize not just yet.
Image source: NASA, Vasile et al, University of Glasgow
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