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 ")

Nifty New SDS Space Debris Sensor For ISS
'Their radars... could easily pinpoint the debris of the early Space Age.' Arthur C. Clarke, 1978.

NanoRacks Space Station Module Concept Validated
Space junk into space architecture.

Interstellar Asteroid Visits Our Solar System
'This asteroid had whirled in from the cold of the interplanetary space...' - Ray Cummings, 1930.

UM Hall Thruster Breaks Records
Someday, we'll see an ion drive used to get to Mars.

 

Google
  Web TechNovelgy.com   

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.

 

 

 

 

 

Current News

Orwell's Memory Hole Looms Larger Thanks To Nvidia
'All history was a palimpsest, scraped clean and reinscribed exactly as often as was necessary.'

Pipefish Robot Checks Pipes Cheap
Just like capsule endoscopy, but for bigger pipes. That go underground.

Nifty New SDS Space Debris Sensor For ISS
'Their radars... could easily pinpoint the debris of the early Space Age.'

NanoRacks Space Station Module Concept Validated
Space junk into space architecture.

Nuclear Drones Could Fly For Years
'I sent my eyes on their rounds and tended my gallery of one hundred-thirty changing pictures...'

SciFiQ Science Fiction Writing Aid
'Books were just a commodity that had to be produced, like jam or bootlaces.'

Robot Only Faster, Not Better, At Recycling
'Whenever a robot finds something it can't identify straight off... it puts whatever it is in the hopper outside your window.'

Poland Starts With 1000 Warmate 'Suicide Drones'
'Royal Security had told the pods to electrocute you or blast you into chum.'

Dream Of Building Your Own Rocket?
Fiorello Bodoni, you inspire all of us.

Zero Mass 'Vaporators' Pull Drinking Water From The Air
Did you think of Star Wars?

Elon Musk Fears A 'Fleet-Wide Hack' Of Autonomous Vehicles
'Khan grinned. 'It's alive! Bu-wahhahahah!''

China Melts Tibetan Permafrost To Plant Forest
'Can you give us a microwave spotlight?'

iFlytek Doctor Robot First To Pass Medical Exams
Doctor shortage? No problem, we'll just use the autodoc.

Slaughterbot AI KIller Quadcopter Drones
'The real border was defended by... a swarm of quasi-independent aerostats.'

Do We Really Want Backflipping Robots?
Also includes wonderful blooper reel.

RNA-Based Biocomputing Device
Living things can sense and analyze complex signals in living cells.

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.