The possibilities for space exploration offered by future developments in nanotechnology are huge. This proposal assumes that we are able to develop advanced nanotechnology, but fail to develop a FTL drive.
I propose that, using nanotech, we develop a seed containing as much information as we can fit that we deem worthwhile and build a space probe around this seed. The information contained should include enough genetic information to recreate an entire ecosystem. This genetic information can be frozen DNA and/or digital.
The seed would have the following components:
- AI - this would need to be a very robust system, as it would probably need to be self operating for several centuries.
- ecosystem genetic seed - DNA information to recreate an entire Earth ecosystem. It could be as detailed as every known plant, animal, fungi, bacteria, etc; or it could be a simplified ecosystem with the bare minimum number of species. Either way, it would need to include enough genetic diversity in each species for it to be viable.
- human genetic seed - since it will be built by us, we get some preferential treatment. It could include genetic material "banked" by anyone we wanted. It should certainly include enough for an isolated colony to survive without becoming dangerously inbred.
- information seed - the total of human knowledge, or at least all that we are willing or able to provide. It could include a download of the entire internet; or all literary works; or it could include all our scientific knowledge.
- sensor package - it is a spaceship, so it needs to know as much as possible about where it is headed. It may need to decide to change its destination while en-route, if it discovers something wrong with its current destination.
- industrial package - everything required to mine resources from asteroids, comets, moons or a destination planet. It will also include the ability to produce any tools, probes, or anything else required. It would use mined resources to eventually build gestation chambers to start recreating the ecosystem. It would also produce the equipment required to terraform a target planet.
- drive - this could be a long-life, but relatively low power ion drive, probably with a nuclear power plant; it could be a solar sail; or it could be as advanced as an antimatter drive giving a fairly short, but very high acceleration.
The idea is to select one or more destination stars that might be capable of supporting terrestrial life and send a seed to each. The seed would be completely self sufficient. It must be able to make decisions for itself and be able to utilise whatever resources it can find. The mission time would probably be several decades but could stretch into centuries.
The main idea is to keep the vessel for this seed as small as possible, si it would not be possible to include a human pilot or crew on such a vessel. AI control is a must. It would need a very advanced AI to make all the complex decisions involved. It would also need to be a very long-lived AI and be able to survive a high radiation environment, so multiple redundancies and probably self-repair would be needed.
I suspect that terraforming a planet could take centuries. As the planet became more suitable for terrestrial life, different species could be added to the ecosystem. The AI would effectively be a god, it would also be the parent and teacher for the young humans when they are eventually gestated and born.
There are some disadvantages to this method of space colonisation:
- no human crew, may be difficult to sell the idea to governments
- it could take centuries to reach a target system
- relies on the ability of an AI to make significant decisions
- we may not be able to program an AI to cope with every possible scenario
- capture of one of these seeds by aliens would give them information that could be used against us
- involves creating an extremely advanced AI with potential ability to reproduce itself
- it will be much smaller and cheaper to build than a generation ship
- multiple copies can be made and sent to different stars
- no human crew means that the time-frame of the mission is not important
- long timescale makes terraforming a target plant a viable option
- can be designed for very high acceleration
- can be designed to withstand high radiation
Note: I got the idea for this from the Peter F. Hamilton book The Nano Flower. Though the seed in the book was a bacteria-sized alien spore that drifted through space, but contained a whole ecosystem of genetic information.
To aid keeping this thread on-topic, here are the thread's basic assumptions:
- we can develop nanotechnology assemblers, debate this here
- we can develop artificial intelligence, debate this here
- faster than light travel is not possible, debate this here
- aliens have not visited the Earth, debate this here
- this is not a discussion on religion, creationism, evolution or God, debate this here