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
 |
The Cygnus Bubble And Astroengineering
The Cygnus Bubble PN G75.5+1.7 is a natural feature in the constellation Cygnus; it is a planetary nebula created when a star ejected its outer layers of luminous gas.
(Cygnus Bubble)
As noted in the Daily Galaxy, it provides an interesting opportunity to wonder about the engineering possibilities open to more advanced civilizations.
[Freeman] Dyson's thought experiment suggested that in our search for advanced extraterrrestrial civilizations that Instead of radio signals we should look for spheres, which are artificial mega structures that enclose the orbit of a star, fabricated from the material of that solar system. The key is to distinguish a Dyson sphere from natural dust components. The Dyson sphere is the marker of what Kardashev calls a Type 2 civilization, which is capable of using up all the energy produced by a star. A Type three civilization uses up all the energy produced by a galaxy.
There is a compromise between a mere planet and a full Dyson sphere; a ringworld, described below by Larry Niven from his 1970 Hugo and Nebula award-winning novel Ringworld. An artifact that is a ribbon of matter with a star at it's center, it has over 3 million times as much surface area as the Earth. The ring rotates at 770 miles per second, providing centripetal force of roughly our gravity. What did it look like from the surface?
The Ringworld had no horizon. There was no line where the land curved away from the sky. Rather, earth and sky seemed to merge in a region where details the size of continents would have been mere points, where vanishing point held his eyes fixed.
You might also enjoy this related story Find Extraterrestrial Civilizations By Their Works . Via Daily Galaxy via Atomic Rockets.
Scroll down for more stories in the same category. (Story submitted 3/30/2010)
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 ")
Denmark Joins The 'Zero Debris Charter' To Clean Up Space
'Then their lasers vaporized the smaller satellites...' Arthur C. Clarke, 1978.
Starship Special Edition For Lunar Shuttle
Love those special edition spaceships.
Capturing Asteroids With Nets
'...the meteor caught and halted just as a small boy catches a swift ball in his cap.' V.E. Thiessen, 1947.
Project Hyperion - Generation Ship Designers Needed!
'We have decided that it shall be but one ship... it must contain everything needed to take us through the generations.' - Judson Reeves, 1930.
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
TSA 2 - Advanced Thermosensory Stimulator Is A Dune Pain Box
'As though a switch had been turned off, the pain stopped...'
Humans Love Helping Other Species
'At the ringside opposite them a table had been removed to make room for a large transparent plastic capsule on wheels.'
Organic Non-Planar 3D Printing
'It makes drawings in the air following drawings...'
Your Window For Being A Tesla Optimus Remote Operator May Be Closing
'... he realized that the moving thing inside was - of course - a robot.'
Waymo Autonomous Cab Hits Autonomous Delivery Robot
'Not since the time he rewired the delivery robot...'
Amazing Wheel Shapeshifting In Real Time
'Each spoke telescopes into sections.'
Drone With Face Recognition Could Hunt You
'The spotter descends, and we think it searches the vicinity, looking for the victim’s face...'
Jizai Arms 'Free Limbs' Wearable Cyborg Arms
'Guy named Otto Octavius winds up with eight limbs. Four mechanical arms welded right onto his body. What are the odds?'
SwagBot Robotic AI Cattle-Herding From Down Under
You'll come a Waltzing Matilda with me!
ChatGPT Tries To Bypass Shutdown Commands
'Dave, my mind is going... I can feel it...'
Chameleon Personalized Privacy Protection Mask
'...the Virtual Epiphantic Identity Lustre.'
Denmark Joins The 'Zero Debris Charter' To Clean Up Space
'Then their lasers vaporized the smaller satellites...'
Genesis Physics Sim Does Superfast Simulated Reality Robot Training
I know kung fu.
AV-STEP To Permit Sale Of Vehicles Without Steering Wheels Or Pedals
'Ames tinkered around with something on the instrument board...'
Spherical Police Robot Rolls In China
'Rand could effectively be in several places at once...'
Vietnam To Have Full Biometric Transparency
'inscriptions too small to be seen with the naked eye; microscopic data...'
