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

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

Security for virtualized datacentres

"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.

Security for virtualized datacentres

More from The Register

next story
Boffins say they've got Lithium batteries the wrong way around
Surprises at the nano-scale mean our ideas about how they charge could be all wrong
Thought that last dinosaur was BIG? This one's bloody ENORMOUS
Weighed several adult elephants, contend boffins
Europe prepares to INVADE comet: Rosetta landing site chosen
No word yet on whether backup site is labelled 'K'
City hidden beneath England's Stonehenge had HUMAN ABATTOIR. And a pub
Boozed-up ancients drank beer before tearing corpses apart
'Duck face' selfie in SPAAAACE: Rosetta's snap with bird comet
Probe prepares to make first landing on fast-moving rock
Archaeologists and robots on hunt for more Antikythera pieces
How much of the world's oldest computer can they find?
prev story


Secure remote control for conventional and virtual desktops
Balancing user privacy and privileged access, in accordance with compliance frameworks and legislation. Evaluating any potential remote control choice.
Saudi Petroleum chooses Tegile storage solution
A storage solution that addresses company growth and performance for business-critical applications of caseware archive and search along with other key operational systems.
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?
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
Providing a secure and efficient Helpdesk
A single remote control platform for user support is be key to providing an efficient helpdesk. Retain full control over the way in which screen and keystroke data is transmitted.