Subject: Um...
Author:
Posted on: 2009-03-20 06:28:00 UTC

We've chucked car-sized spacecraft so hard that they've exceeded not just Earth's escape velocity but also the Sun's. We've landed more than two metric tons of scientific equipment on Mars, and gotten enough data back to assemble fairly comprehensive geologic maps of the planet. We've landed spacecraft on Venus. We've nailed comets with bullets fired years earlier. We put people on the moon when the most powerful computers on the planet were less powerful than the average modern graphing calculator, and all within 100 years of the first powered flight in history. I would not be so quick to denounce human potential.

And no, we wouldn't have to terraform entire planets for colonization. Large-scale tent cities are feasible on Mars, at least, where low pressure and gravity make holding up tents with internal pressure possible.

(And I disagree on the possibility of terraforming planets. In the last few thousand million years, Earth has been everything from a volcanic lava planet straight out of the dreams of Lucas to a ball covered in green oceans under a carbon dioxide atmosphere to a smoldering impact wasteland. Terraforming is quite possible, although it'll probably take geological time, rather than a more human scale, to complete. Mars will be harder than some worlds, as it's small and has no magnetic field.)

Space exploration and colonization is a matter of time and will, not possibility.

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