Science Fiction
Dictionary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
 |
DNA-Shaped Dust In Plasma May 'Live'
A new computer simulation shows that dust immersed in ionized gas can organize itself into DNA-like double helixes. These dust structures can behave in many respects like living organisms.
The dust helixes can store information; the scaffolding of their 'bodies' can have two stable states - with different size diameters. That way, a spiral can contain sets of wide and narrow sections.
It appears that the specific order of these sections can be copied from one dust spiral to another, like a genetic code. The researchers aren't sure how it happens, but they think each narrow section of spiral creates a permanent vortex of moving dust outside it. So if another spiral drifts alongside it, that vortex pinches the same length into its narrow state.
Scientists probably wouldn't classify it as "living" - hurricanes are similarly self-organizing systems, but you wouldn't call them "alive."
The team of scientists at the Max Planck Institute for Extraterrestrial Physics in Garching, Germany, are now looking for these structures in nature. One possible place to look is in the rings of Saturn; the dust particles would be fine ice grains and the plasma supplied by the solar wind.
(Closest image of Saturn ring structure [NASA Cassini])
The "life-processes" of these dust-grain structures would run about a hundred thousand times slower than those found in the biochemistry of the creatures of Earth.
Science fiction fans have already had a taste of this idea. In his 1957 story The Black Cloud, an enormous space cloud seems to threaten the Earth. See a related story Magnetic Fields Found To Shape Planetary Nebulae.
Another fascinating example of celestial phenomena exhibiting life-like properties is the solar "tadpoles" found in solar flares; read more about Solar Tadpoles.
Read more at Hot Gas in Space Mimics Life and Could alien life exist in the form of DNA-shaped dust?. Thanks to reader Misja van Laatum for the tip on this story.
Scroll down for more stories in the same category. (Story submitted 8/15/2007)
Follow this kind of news @Technovelgy.| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
Would
you like to contribute a story tip?
It's easy:
Get the URL of the story, and the related sf author, and add
it here.
Comment/Join discussion ( 2 )
Related News Stories - (" Artificial Intelligence ")
Nuclear Plant Restarted To Power AI To Feed Us Dreams
'...Anything was possible in my imaginary environment.' - Raymond Z. Gallun, 1940.
Dino From Magical Toys An AI Companion To Children
'...the imaginary companions discovered by needful children.' - Anne McCaffrey, 1990.
AI Computer Chip Designs Passeth Human Understanding
'It seems that at one time computers were designed directly by human beings.' - Isaac Asimov, 1958.
Fine-Tune Your Infinite Book The Way You Want It
'I squatted down beside the roller and tried to make some sense out of the knobs. There were thirty-nine of them...' - Clifford Simak, 1957.
Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.
Science Fiction
Timeline
1600-1899
1900-1939
1940's 1950's
1960's 1970's
1980's 1990's
2000's 2010's
Current News
Nuclear Plant Restarted To Power AI To Feed Us Dreams
'...Anything was possible in my imaginary environment.'
SpaceX's Starman Tesla Roadster In Space
'Somewhere in space, a chrome and blue automobile raced the green light of Earth.'
Pivotal Blackfly Electric Aircraft Lifts And Hovers
'That explains how it was so easy for me to remain motionless in midair...'
CORLEO Robotic Horse Concept Looks Ready To Ride
Imagine digging your heels in to a steam horse!
Who First Thought Of A Tin Foil Hat?
'We had discovered that metal was relatively impervious to the telepathic effect.'
Warp Drive Tech Back On The Menu
'Detailed plans for the construction of the Gundstetter-Halone warp drive were flowing.'
Huawei Pura X Folding Phattie Phone
Why can't we get more innovative phone configurations?
Sleep Pods At Daxing International Airport
'Do not waste your priceless company on the unappreciative folds of a sleep pod...'
Robot Baristas Learn Their Trade Without Paying Royalties
'...so we've promised him a generous pension from the royalties.'
JAXA Int Ball 2 Coming Right Along As Star Wars Remote
'Hocus-pocus religions and archaic weapons are no substitute for a good blaster at your side.'
Robot Bricklayer Or Passer-By Bricklayer?
'Oscar picked up a trowel. 'I'm the tool for the mortar,' the little trowel squeaked cheerfully.'
Robot Gas Station Attendant Pumps Gas For You
'... he waited for the robotrix attendant to finish fueling up his ship.'
Engineer Creates Crazy Motorized Track Hospital Bed
The Roujin Z system provides care to fully bedridden patients - and then some!
Tiny Flying Robot Weighs Just One Gram
'Aerostat meant anything that hung in the air. This was an easy trick to pull off nowadays.'
Some Ringworld Configurations Are Stable
'The Ringworld had no horizon. There was no line where the land curved away from the sky.'
TRANSFORM Dynamic Furniture Concept Becomes What You Need
'An adjustment panel outside the door would cause it to extrude various appurtenances in memory plastic...'
