/sci/ - Science & Math

>>3812272
- Proven compact plasma gasification unit which can work in zero gravity (which means modifications using maglev centrifuges which can then use regenerative braking so to save power
- Either compact LFTR design which can get rid of excess heat efficiently in space or large efficient solar panels to power the PGU.
- Proven printing/molding of individual elements from PGU to create 95% of the required robots
- Exceptional long carbon nanotube. graphene or grafold extrusion process out of PGU carbon material in microgravity
- Development of efficient carbon dioxide > oxygen filtration and conversion systems, but Mad Scientist made a thread yesterday about a water/sugar/alcohol filtration system which can run indefinitely as long as there's electricity I believe as well as some 'likeafish' device. PGUs can also be used to split CO2 itself into its components and ozone extracted from that can be filled into an outer shell of such O'Neill designs for extra radiation protection
- Some kind of meteor defense such as mass drivers that knock away space junk or perhaps solar lasers
- Rings around habitat to enact a small artificial magnetic field around the structure. I remember reading around a year ago that they made a small one about the size of a basketball. Now it's a matter of scaling up the technology.
- Some kind of drainage system in bottom of onboard lakes and later seas for nutrient redistribution onto mountains (I THOUGHT OF IT BEFORE I READ RINGWORLD SHUT UP_

>>3512267
Not a zero-sum game. We can convert the entire mass of Vesta and Ceres into O'Neill cylinders and still have a terraformed Mars, Venus, and possibly Mercury and Luna.

Using mass to generate gravity is extraordinarily wasteful. Spinning makes much more sense.

http://en.wikipedia.org/wiki/Hydroponics
http://en.wikipedia.org/wiki/Space_habitat

Mars is pretty good if we want to grow it without changing too much. Make a pressurized dome, raise the CO2 concentration a little bit above Earth standard, mix in microbes/bacteria/algae from Earth into the native Martian soil and you should have some good growing terrain. The 24.5 hour day is also very important. As for places like the moon, you'd have to do indoor hydroponics for obvious reasons, as well as the 28 Earth-day lunar day.

Wait until a cheap way to get shit into space or asteroid mining/refining/building and improved material technologies.

>>2774841
>There will eventually have to be a limit on how old a person can get
That will be my cue to go on an interstellar voyage. No government body is going to tell me exactly how long I can live.
As for resources and power, we have the sun and the asteroid belt. Not to mention all the other solar systems.

Perhaps you should take a look at the cost of sending the weight of the International Space Station into space.
A more feasible solution is a rotating space station/ship with the inside terraformed, like pic.

If it were up to me we'd have all 7 billion spread along Mercury/aerostat Venus/Earth/Luna/Mars/Ceres/Europa/Ganymede/Callisto/Amalthea/Titan/Enceladus

>>2224486

And don't forget the delicious private habs Bigelow Aerospace is planning to build in orbit, the Moon, and Mars.