by JoeW » Tue 14 Jun 2005, 14:21:44
$this->bbcode_second_pass_quote('PenultimateManStanding', 'F')orget about global warming, oil depletion, etc That's the biggie Joe! THE CORE IS SOLIDIFYING! Or how about a hypernova explosion in the nearby milky way? Massive gamma rays stripping the Earth of ozone. The sky turns brown and everything dies.
I didn't mean to sound alarmist. I'm sure we will all be quite dead before then.
But any discussion of colonizing planets has to be fact-based, and there are a number of prerequisites:
1) geologically active
2) atmosphere
3) has the right components to support life (H2O, O2, etc)
4) temperature in an acceptable range
5) has a size/mass in an acceptable range (Imagine if your weight suddenly increased by a factor of 10. It might be hard to get around).
There are plenty of other factors to consider as well, like how long is the planet's day? and if this planet is so great, how come nobody else is already living there?
At any rate, Mars fails on a number of prerequisites, namely #1 and #3 above. It is #2, #4, and #5 that get the terraformers excited.