Feeds

Forget SETI, this is how you find aliens: Hefty prof speaks

The truth is out there. Or maybe in here, actually

Remote control for virtualized desktops

"Shadow Biospheres" - the parallel-life ALIENS AMONG US

But even a superpowered radio lighthouse would need to stay operational for incalculable thousands or even billions of years to give us a decent chance of detecting it - Davies also raises the point that Sun-like stars, perhaps with attendant Earthlike worlds and civilisations, existed in the Milky Way well before our solar system even formed. There would be a major risk that any such beacon, even if built, was subsequently destroyed along with its parent civilisation and star - or was allowed to run down after its builders turned themselves into floating disembodied intelligences or whatever and forgot about it. By the time Mr Marconi got to work on newly-formed Earth, the fading pulses of long lost early-Galactic lighthouses would be lost far out in the vastness of intergalactic space.

So, what should we be doing instead of/alongside SETI?

According to Davies there are several rather more promising lines of enquiry which might help us get a handle on whether we are simply a bizarre statistical freak in a beautiful but cold and empty vastness, or in fact but one of countless civilisations scattered through time and space.

First up, there's the idea of looking into the likelihood of life developing given Earthlike conditions, which would help to put some actual numbers into the famous "Drake equation" postulated by the founder of SETI. If it is in fact reasonably likely for life to appear in liquid-water environments, Davies says, it might actually have happened several times right here on old Earth. Along with the microscopic life which eventually assembled itself into plants, animals and so forth, there might also be one or more "shadow biospheres" of microbes built along different chemical lines which have never started to organise themselves into bigger lifeforms.

Most terrestrial life is microbial, and biologists have only scratched the surface of the microbial realm. Many bizarre micro-organisms have been discovered, including the so-called extremophiles that thrive in conditions lethal to most known forms of life, but so far all of these organisms have turned out to belong to the same tree of life as you and me. However, this means little. Biologists customize their techniques to target standard life, so any microbes with a radically different form of biochemistry would tend to be overlooked.

In theory at least, the shadow-life might also be present here on Earth in larger forms - simply ones we haven't yet encountered. Various earthly environments haven't yet been much explored, for instance the deep oceans.

Then, there's the matter of intelligence. Even if the galaxy and universe beyond is hopping with biospheres containing life at various levels of organisation, it may still be that intelligence is so wildly unlikely as not to have arisen elsewhere - or indeed, it might be a counter-survival trait which tends to wipe its possessor out. Perhaps, every time intelligence arises, that species swiftly thereafter destroys itself by the use of planet-busting weaponry, or becomes enervated by spending all its time in immersive artificial game/entertainment environments and dies out because it can't be bothered to breed.

Internet Security Threat Report 2014

More from The Register

next story
Antarctic ice THICKER than first feared – penguin-bot boffins
Robo-sub scans freezing waters, rocks warming models
I'll be back (and forward): Hollywood's time travel tribulations
Quick, call the Time Cops to sort out this paradox!
Your PHONE is slowly KILLING YOU
Doctors find new Digitillnesses - 'text neck' and 'telepressure'
SEX BEAST SEALS may be egging each other on to ATTACK PENGUINS
Boffin: 'I think the behaviour is increasing in frequency'
Reuse the Force, Luke: SpaceX's Elon Musk reveals X-WING designs
And a floating carrier for recyclable rockets
NASA launches new climate model at SC14
75 days of supercomputing later ...
Britain's HUMAN DNA-strewing Moon mission rakes in £200k
3 days, and Kickstarter moves lander 37% nearer takeoff
prev story

Whitepapers

Go beyond APM with real-time IT operations analytics
How IT operations teams can harness the wealth of wire data already flowing through their environment for real-time operational intelligence.
The total economic impact of Druva inSync
Examining the ROI enterprises may realize by implementing inSync, as they look to improve backup and recovery of endpoint data in a cost-effective manner.
Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Mitigating web security risk with SSL certificates
Web-based systems are essential tools for running business processes and delivering services to customers.