The Next Fifty Years In Space 273
MarkWhittington writes "2007 marks the fiftieth anniversary of the Space Age, agreed by most to have begun with the launch of the first artificial Earth satellite, Sputnik, on October 4th, 1957. While some are taking stock of the last fifty years of space exploration, noting what has been accomplished and, more importantly, what has not been accomplished, others are wondering what the next fifty years might bring."
Except we can change the launch costs. (Score:5, Informative)
Yes, I said non-polluting, because the exhaust is non-radioactive hydrogen. (Read the article before denouncing, please.) For in-system work, we could use Orion or variants, or even the nuclear salt-water rocket [washington.edu]. Those do have radioactive exhaust, but out in space that's not exactly a major problem. With that level of specific impulse [wikipedia.org] along with high thrust, the costs of developing space resources are drastically reduced.
Colonies on other planets may or may not be a good idea (though with a big enough space economy a moonbase becomes attractive). But mining asteroids and putting dangerous industries in space is a very nice idea once we're not bogged down with just chemical propellants.
Future Planned Moon Missions (Score:2, Informative)
Re:Except we can change the launch costs. (Score:3, Informative)
Err... the article refers to solutions starting from LEO. That's the easy part.
Getting the whole thing into orbit in the first place is the hard part, because the fuel has to lift itself out of the gravity well.
The space elevator is the answer to the *launch* cost problem, not nuclear power.
What the Experts Think on Next 50 Years (Score:3, Informative)
Re:Imagine if the World Trade Center... (Score:3, Informative)