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 ")
The First Space Warship For Space Force
'Each of the electrical ships carried about twenty men...' - Garrett P. Serviss, 1898.
Is China Mining Helium-3 On The Moon's Farside?
'...for months Grantline bores had dug into the cliff.' -
Solitary Black Hole Wanders In Space
'...the Hole is something like a vortex or a whirlpool?' - Frank K. Kelly, 1935.
Spaceplane From Virgin Atlantic
'ZARNAK, YOU'RE TO COMMAND A SCOUTING EXPEDITION --- FIND OUT WHAT THIS IS ALL ABOUT!'
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
China Steals Strato Airship Design From Google App Engine
'...war-balloons, or, as it would be more correct to call them, navigable aerostats.'
The First Space Warship For Space Force
'Each of the electrical ships carried about twenty men...'
Biohybrid Jellyfish Explore The Ocean
As predicted, and detailed, by science fiction writers!
Should AIs and AI Robots Demand Rights?
'This robot is a creature... It is a manlike being. Therefore, like any other talking, thinking man, he is entitled to a court trial!'
Robot Learns Human Tool Usage By Imitation Learning
'I got one of those new electronic cameras...'
Companion Caregiver ChatGPT Dolls
'Every Artificial Friend is unique, right?'
'Pregnancy Humanoids' From China Replace Moms
'A great many of these synthetic babies were made...'
Man Builds 200 Foot Basement Firing Range
'The basement was huge... carved deep into the rock.'
Russians Create Robot Tank Platoons
'The remotely-operated robot tank is an old idea...'
3D-Printed Exoskeleton Learns From Your Hand
'...small electric motors at the principal joints worked the prosthetic framework by means of steel cables...'
Smartwatch Powered By Slime Mold
'Living protoplasm incorporated into the Ampek F-a2 recording system...'
Unmanned Boats Attack At Sea
'The autofreighter smashed into the boat...'
Carpentopod Walking Table
'Twoflower's Luggage, which was currently ambling along on its little legs...'
Iron Drone Raider Counter-UAV Operations
'You've got an aggressive machine up in the air now.'
SpaceX Rocket Shuttle Point-To-Point On Earth
'He came to as the ship went into free flight, arching in a high parabola over the plains...'
Quaise Uses Beams Of Energy To Dig Geothermal Wells
'The peculiar quality of this light, which gave it its great preeminence over all other penetrating rays...'
