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
Latest By
Category:
Armor
Artificial
Intelligence
Biology
Clothing
Communication
Computers
Culture
Data Storage
Displays
Engineering
Entertainment
Food
Input Devices
Lifestyle
Living Space
Manufacturing
Material
Media
Medical
Miscellaneous
Robotics
Security
Space Tech
Spacecraft
Surveillance
Transportation
Travel
Vehicle
Virtual
Person
Warfare
Weapon
Work
"I operate by a code that makes me responsible for what I do, makes me definitely, directly, genuinely responsible. I am precisely the kind of person I made myself out to be."
- Harlan Ellison
 |
| Rotating Hollow Planetoid Habitat | ||
| An asteroid (or planetoid) hollowed out, spun for artificial gravity, used as a habitat. |
This is an early expression of this idea; using the solid metal core of an ancient planet actually works better than an asteroid.
| It was nearly twenty-four hours later that they finally approached their destination, a tiny, five-mile world of solid metal, a part of the nickel-steel core of some long vanished planet. Its surface turned swiftly beneath them, flashing around in moments as they watched, a surface made up of great crags and clefts of metal, broken, barren masses of metal. “Lord — it would be impossible to establish a city on the surface of that top!” exclaimed one of the Patrolmen. “The centrifugal spin there would throw anything off into space.” “How about the inside of it then?” asked one of the guards, smiling at him... "...When the colony was established, the whole interior was carved out with atomic burners — burned the stuff out into gas, and let it escape. The shell’s about half a mile thick. Inside, the centrifugal force gives an acceleration just equal to one earth gravity, we’re up to speed, and you can see we have about an earth-weight away from it now. And an artificial sun gives plenty of light.” |
| Technovelgy from Electronic Siege,
by John W. Campbell. Published by Wonder Stories in 1932 Additional resources -
|
Many asteroids are just piles of rubble, held together by what little gravity comes from the mass of the objects. It wouldn't be possible to spin them for artificial gravity, or to excavate them.
This idea resurfaced in the 1960's:
For a very early use of the phrase, see hollow asteroid (1944) from Juke Box Asteroid by Joseph Farrell.
Hollowed-out asteroid habitats are also called "Cole bubbles" after Dandridge Cole. (See also the section asteroid habitats in Project Rho. Thanks also to @fredkiesche for tips.)
In 1963, Dandridge Cole wrote Exploring the Secrets of Space: Astronautics for the Layman with I. M. Levitt. In this book they suggested hollowing out an ellipsoidal asteroid about 30 km long, and rotating it about its major axis to simulate gravity. By reflecting sunlight inside with mirrors, and creating, on its inner surface, a pastoral setting an asteroid could be transformed into a permanent space colony. Cole and Cox also envisioned that asteroids would provide the raw materials to form the basis of a spacefaring civilization. And, that asteroidal materials would also serve terrestrial needs. In their view these materials could be transported using mass drivers or linear motors. Cole’s work largely presages that of Gerard K. O’Neill by more than a decade.
Comment/Join this discussion ( 0 ) | RSS/XML | Blog This |
Additional
resources:
More Ideas
and Technology from Electronic Siege
More Ideas
and Technology by John W. Campbell
Tech news articles related to Electronic Siege
Tech news articles related to works by John W. Campbell
Rotating Hollow Planetoid Habitat-related
news articles:
- Is A Hollow Rotating Asteroid Habitat Practical?
- Restructure An Asteroid, Spin It, Get A 'Space Habitat' With Gravity?
| Beautiful Visualization of Dawn Spacecraft |
| Tumblin' Tumbleweed Rovers To Eplore Mars |
| Tentacled Robot Captures Space Debris |
| Reflect Orbital Sunlight On Demand |
Want to Contribute an
Item?
It's easy:
Get the name of the item, a
quote, the book's name and the author's name, and Add
it here.
| <Previous | Next> |
|
|
|
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 Science Fiction 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
'Our planes are going to start bringing in bales of discarded plastics...'
'... completely forgetting the ship at sight of the awesome figure and great head of the giant Gaut...'
'So, Ender, we will now begin your education.'
'What strange sensitivity! What an amazing development of science was manifested in every move and act and word of this Robot!'
'Forget the head atop it, the legs below, feet, arms, hands. It compels erasure.'
'That explains how it was so easy for me to remain motionless in midair or to perch on a flagpole in imitation of a giant bird, even in the windy city of Chicago.'
'The thirty-odd miles of The Factory’s circumference...'
'Wandering mines, you took them out on the edge of the desert, set them down and activated them.'
