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

 

Asteroid To Orbit Moon?

A plan to find a small nearby asteroid and move into orbit around the Moon is now being talked about in the halls of NASA. The study, from the Keck Institute for Space Studies, examines the feasibility of carrying out the project in the next decade.


(Multi-Mission Space Exploration Vehicle approaches an asteroid [NASA])

The two major conclusions from the KISS study are: 1) that it appears feasible to identify, capture and return an entire ~7-m diameter, ~500,000-kg near-Earth asteroid to a high lunar orbit using technology that is or could be available in this decade, and 2) that such an endeavor may be essential technically and programmatically for the success of both near-term and long-term human exploration beyond low-Earth orbit. One of the key challenges the discovery and characterization of a sufficiently large number of small asteroids of the right type, size, spin state and orbital characteristics could be addressed by a low-cost, ground-based observation campaign identified in the study. To be an attractive target for return the asteroid must be a C-type approximately 7 m in diameter, have a synodic period of approximately 10 years, and require a ∆V for return of less than ~200 m/s. Implementation of the observation campaign could enable the discovery of a few thousand small asteroids per year and the characterization of a fraction of these resulting in a likelihood of finding about five good targets per year that meet the criteria for return.

Proof-of-concept trajectory analysis based on asteroid 2008 HU4 (which is approximately the right size, but of an unknown spectral type) suggest that a robotic spacecraft with a 40-kW solar electric propulsion system could return this asteroid to a high-lunar orbit in a total flight time of 6 to 10 years assuming the asteroid has a mass in the range of 250,000 to 1,000,000 kg (with the shorter flight times corresponding to the lower asteroid mass). Significantly, these proof-of-concept trajectories baseline a single Atlas V-class launch to low-Earth orbit.

The study also considered an alternative concept in which the spacecraft picks up a ~7-m diameter rock from the surface of a much larger asteroid (> 100-m diameter). The advantage of this approach is that asteroids 100-m in diameter or greater are much easier to discover and characterize. This advantage is somewhat offset by the added complexity of trying to pick up a large 7-m diameter rock from the surface, and the fact that there are far fewer 100-m class NEAs than smaller ones making it more difficult to find ones with the desired orbital characteristics. This mission approach would seek to return approximately the same mass of asteroid material of order 500,000 kg as the approach that returns an entire small NEA.
(Asteroid Retrieval Feasibility Study)

Update: See also this material on the AsterAnts: A Concept for Large-Scale Meteoroid Return and Processing, a proposal that dates from the late 1990's. (Thanks to Ashley for pointing this one out.) End update.

Robert Heinlein wrote about capturing an asteroid and changing its orbit in his still excellent 1939 short story Misfit:

Eighty-eight swung some millions of miles further around the sun. The pock-marks on her face grew deeper, and were lined with durite, that strange close-packed laboratory product which (usually) would confine even atomic disintegration. Then Eighty-eight received a series of gentle pats, always on the side headed along her course. In a few weeks' time the rocket blasts had their effect and Eighty-eight was plunging in an orbit toward the sun.

When she reached her station one and three-tenths the distance from the sun of Earth's orbit, she would have to be coaxed by another series of pats into a circular orbit. Thereafter she was to be known as E-M3, Earth-Mars Space Station Spot Three.
(moving an asteroid)

Via Yahoo.

Scroll down for more stories in the same category. (Story submitted 1/8/2013)

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 ( 3 )

Related News Stories - (" Space Tech ")

SpaceX EVA Spacesuit Tested By Polaris Dawn Crew
'Now, except for weight and heat, the same conditions prevail in this chamber as in space.' - Otto Willi Gail, 1929.

ESA To Build Moon Bases Brick By Printed LEGO Brick
'We made a crude , small cell and were delighted - and, I admit, somewhat surprised - to find it worked.' - John W. Campbell, 1950.

FLOAT Levitating Train On The Moon ala Clarke
'The low-slung monorail car, straddling its single track, bored through the shadows on a slowly rising course.' - Arthur C. Clarke, 1955.

SpaceX Intros Extravehicular Activity Suit
'Provision had been made to meet the terrific cold which we knew would be encountered the moment we had passed beyond the atmosphere.' - Garrett P. Serviss, 1898.

 

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.

 

 

 

 

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

Chaffeur Robot Musashi Will Drive Your Regular Car
'What would you do,' Eric asked the robot cabdriver, 'if your wife had turned to stone, your best friend were a toad, and you had lost your job?'

Space Exporers! Now, You Can Drink Your Own Urine
'those suits they wear -- call them 'stillsuits' -- that reclaim the body's own water...'

SpaceX EVA Spacesuit Tested By Polaris Dawn Crew
'Now, except for weight and heat, the same conditions prevail in this chamber as in space.'

Automatic Bot Traffic Is 38 Percent Of HTTP Requests
'there were so many worms and counterworms loose in the data-net...'

Shanghai Guidelines For Humanoid Robots
'Now, look, let's start with the three fundamental Rules of Robotics...'

Desktop TARS Robot From Interstellar
What's YOUR sarcasm setting?

Robots Can Now Have Smiling Faces With Human Skin
'I am a cybernetic organism...'

Virtual Rat Predicts Actual Rat Neural Activity
'..the synthetic intellects at the Place of Knowledge had far outstripped the minds of men.'

GoSun EV Solar Charger Drapes Onto Your Car
'...six square yards of sunpower screens.'

Rizon 4 Ironing Robot
'But after washing and drying clothes had to be smooth - free from fine lines and wrinkles ...'

Cognify - A Prison Of The Mind We've Seen Before In SF
'So I serve a hundred years in one day...'

Robot With Human Brain Organoid - 'A Thrilling Story Of Mechanistic Progress'
'A human brain snugly encased in a transparent skull-shaped receptacle.'

Goodness Gracious Me! Google Tries Face Recognition Security
'The actuating mechanism that should have operated by the imprint of her image on the telephoto cell...'

With Mycotecture, We'll Just Grow The Space Habitats We Need
'The only real cost was in the plastic balloon that guided the growth of the coral and enclosed the coral's special air-borne food.'

Can A Swarm Of Deadly Drones Take Out An Aircraft Carrier?
'The border was defended by... a swarm of quasi-independent aerostats.'

WiFi and AI Team Up To See Through Walls
'The pitiless M rays pierced Earth and steel and densest concrete as if they were so much transparent glass...'

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.