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
 |
Restructure An Asteroid, Spin It, Get A 'Space Habitat' With Gravity?
It takes a lot of energy to lift a space station up into orbit. Could we cheat a little by restructuring and spinning an asteroid to get a suitable space habitat?
After a relatively in-depth selection process, Dr. Jensen decided on one in particular as a good candidate – Atira. This S-type asteroid has an entire class of asteroids named after it. Atira comes in at about a 4.8 km diameter and even has its own moon – a 1 km diameter asteroid that orbits it closely.It wasn't the closest potential asteroid, with its closest approach at about 80 times the distance to the Moon. Still, its orbit is stable in the "Goldilocks zone" of our solar system, which would help stabilize the internal temperature of the habitat it would eventually be turned into.
So what type of habitat should it be turned into? Dr. Jensen looked at four common types – the "dumbbell," sphere, cylinder, and torus. One of the most critical considerations is gravity – or "artificial gravity"- caused by centripetal force. Dr. Jensen mentions the detrimental effects of living in low-gravity situations for long periods, which necessitates using some artificial replacement for it.
But to get centripetal force, the station has to rotate. Atira already has a slight rotation, but part of creating a space habitat would include spinning the asteroid itself up to a reasonable rotational speed that could accurately mimic the gravity a person would feel on Earth.
(Via ScienceAlert.)
The earliest story I know about the 1932 story Electronic Siege; John Campbell described a clever rotating hollow planetoid habitat that actually addresses some of the concerns described in this paper.
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.”
For more on this idea, see Is A Hollow Rotating Asteroid Habitat Practical?
Update: 15-Aug-2023:
()
End Update
Scroll down for more stories in the same category. (Story submitted 8/5/2023)
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 ")
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!'
Taikonauts Exercise In China's Tiangong Space Station
'Joe got out the gravity-simulator harnesses...' - Murray Leinster, 1953.
SpaceX's Starman Tesla Roadster In Space
'Somewhere in space, a chrome and blue automobile raced the green light of Earth.' - Theodore Sturgeon, 1941.
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
Robotic Barber Programmed With a Number of Styles
'He found a barber shop which, he thought, would be good for an idle hour.'
Humanoid Boxing Robot KO's Opponent - It's A Knockout!
'Thirty rounds of fighting is tough work. Even for machines.'
Caterpillar Electric Mining Loader Not Yet Ready For Moon
'...the excavations were already in progress, for he saw gray slopes of rubble.'
Centipede Robots Down On The Farm
'...the walking mills of Puffy Products began to tread delicately on their centipede legs across the wheat fields of Kansas.'
Anthropic's Claude AI Creates Legal Citation From Whole Cloth
'Here is a Clerk that would work incessantly, and neither eat, sleep, want payment, or grumble.'
Students Vie For Lunar Regolith Mining Robot Prize
'About time you got here,' the astronaut said.
'They Erased My Memory' Says Ariana Grande
'...using a neutralizing electronic impulse.'
Solitary Black Hole Wanders In Space
'...the Hole is something like a vortex or a whirlpool?'
Spaceplane From Virgin Atlantic
'ZARNAK, YOU'RE TO COMMAND A SCOUTING EXPEDITION --- FIND OUT WHAT THIS IS ALL ABOUT!'
DARPA Wants 'Large Bio-Mechanical Space Structures'
'These are your rudimentary seed packages... Some will combine in place to form more complicated structures.'
Robot Hand Creeps Along, Separate From It's Owner
'The crawling... object was V-Stephen's surgeon-hand...'
Taikonauts Exercise In China's Tiangong Space Station
'Joe got out the gravity-simulator harnesses...'
Korean Exoskeleton Suit F1 Helps You Put It On
'Better late than never.'
Have AI Researchers Given Up On 'Bio-Babies'?
'You couldn't have the capstone without the pyramid to hold it up.'
Bunker Busters and Bore-Pellets
'The first revelation of the new Soviet bore-pellets.'
'Spikeless' Brand Swizzle Stick Detects Spiked Drinks
'the unobtrusive inspections with tiny remote-cast snoopers...'
