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
 |
'Aerogel' Sheets For Martian Gardens
Ah, that pesky food problem when on Mars. How to grow crops in such a barren wasteland?
The “aerogel” sheets work by mimicking Earth’s greenhouse effect, where energy from the sun is trapped on the planet by carbon dioxide and other gases. Spread out in the right places on Mars, the sheets would warm the ground and melt enough subsurface ice to keep plants alive.
Robin Wordsworth, who worked on the sheets at Harvard University, said: “If we want to make sustainable habitats on another planet using present-day technology, this approach could be very useful. It’s completely scalable, so the area covered could be anywhere from a few square metres to large regions of the planet.”
The aerogel used to make the sheets is composed 97% of air, with the rest made up of a light silica network. The researchers, including scientists at Nasa and the University of Edinburgh, showed that 2cm- to 3cm-thick sheets of silica aerogel blocked harmful UV rays, allowed visible light through for photosynthesis and trapped enough heat to melt frozen water locked in Martian soil.
“Placing silica aerogel shields over sufficiently ice-rich regions of the Martian surface could therefore allow photosynthetic life to survive there with minimal subsequent intervention,” the researchers wrote in Nature Astronomy. The sheets could be laid directly on the ground to grow algae and aquatic plants, or suspended to provide room for land plants to grow beneath them.
Sounds a lot like Golden Age science fiction writer Raymond Z. Gallun's asteroid garden from his excellent 1951 novella Asteroid of Fear:
"Sealed to the ground along all the sides, Honey," he growled to Rose.
Under ideal conditions, the inside of the great bubble was soon a mass of growing things. Rose had planted flowers—to be admired, and to help out the hive of bees, which were essential to some of the other plants, as well. Nor was the flora limited to the Earthly. Some seeds or spores had survived, here, from the mother world of the asteroids...
The harsh environment on Mars has always made growing food a daunting prospect, but scientists believe they have cracked the problem with sheets of material that can transform the cold, arid surface into land fit for farming.
Now he started unrolling great bolts of a transparent, wire-strengthened plastic. Patching with an adhesive where explosion-rents had to be repaired, he cut hundred-yard strips, and, with Rose's help, laid them edge to edge and fastened them together to make a continuous sheet. Next, all around its perimeter, he dug a shallow trench. The edges of the plastic were then attached to massive metal rails, which he buried in the trench.
(Read more about Gallun's asteroid garden)
Scroll down for more stories in the same category. (Story submitted 7/21/2019)
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 ( 0 )
Related News Stories - (" Space Tech ")
NASA Tests Prototype Europa Lander
Why have legs if they don't walk around? Just asking.
NASA's Psyche Mission To Metal Asteroid Launches Thursday!
'We can even fuel the space ships and mine the Asteroid Belt for rare metals...'
Space Weather To Universe Weather
'It radiates outward in a cone which, by the time it has reached our section of space, is many lightyears across.' - Poul Anderson, 1953.
That's MOXIE! Terraforming Mars Baby Steps
'Drake was the young spatial engineer he employed to terraform the little rock.' - Jack Williamson, 1931.
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
Wearable Energy Harvester
'... he had tightened the chest to gain maximum pumping action from the motion of breathing.'
Drones Participate In Buddhist Rites
'...a prayer wheel swung into view and began spinning at a furious pace.'
Anna Indiana AI Singer-Songwriter
'She is a personality-construct, a congeries of software agents'
Video Manicuring ala Schismatrix
'The program raced up the screen one scan line at a time'
'Feel the AGI' OpenAI Leader Now OpenWorship
'And are all the people willing to be governed by a machine?'
NASA Tests Prototype Europa Lander
Why have legs if they don't walk around?
Tailsitter Drone Aircraft For SAR
'...it was so easy for me to remain motionless in midair.'
Forward CarePod The AI Doctor's Office
'It's an old model,' Rawlins said. 'I'm not sure what to do.'
Mika The Robot-Boss
'the robot-boss was busy at the lip of the new lode instructing and egging the men on to greater speed...'
Yamaha Motoroid 2 No Handlebars Self-Balancing Motorcycle
'He rode the bike with an intense lack of physical grace...'
San Francisco Autobus
'THE autobus turned silently down the wide street...'
Should Your Car Decide If You Can Drive?
'Okay. Maybe the car was right...'
Lucid Dreams On Demand From Prophetic and Card79
'the peeper did not operate by virtue of its machinery alone, but by the reaction of the brain and the body of its user...'
Honda UNI-ONE Hands-Free Wheelchair Follows 100 Year-Old Design
'Noiselessly, on rubber-tired wheels, they journeyed...'
EBS-260 Handjet Free Hand Dot Matrix Printer
'McKie held a chalf-memory stick over the dusted surface.'
Sensitive, Soft Robot Skin
'...tinted material that had all the feel and appearance of human flesh and epidermis.'
