posted on Mar, 22 2004 @ 12:52 PM
This isn't meant to rain on your parade, but rather explain why all these ideas are great stuff but not solutions to colonizing Mars or any other
bodies in our solar system.
For starters, capturing CO2 laden asteroids (actualy I think you'd be looking for comets) would be extremely difficult. You'd not only have to track
down enough of them but have to spend a HUGE amount of energy redirecting them to Mars. Even if this was easily done the CO2 they carry won't change
Mars much. Right now the Martian Atmosphere is more than 95% CO2. And yet even on the warmest days in the warmest areas humans could only stand the
temperature a few hours.
Mars is lighter than Earth and therefore has trouble hanging onto a think amosphere, bleeding most of the gases back into space.
Mars has only just over 2% atmospheeic nitrogen, a key component of all known plants, and therefore even given CO2 to breathe would have no nitrogen
Mar's core is either dead or almost dead and has very little magnetic field. Most life would be iradiated and killed on the surface if not shielded
As for rail gun launches, you talk about launching humans in railguns. These would have to be some pretty big rail guns if they aren't going to
liquify the passangers. You have to keep the G forces down while still reaching escape velocity. This is why rockets use stages of boosters to
maintain a relativly constant acceleration while reaching escape velocity.
I hope one day humans do live on Mars. But for now we lack affordable technology and would have to rely on earth for supplies.
Having a few things in your favor is great, but you need to cover all your bases for sustained life. Its not enough to have water and shelter from
heat. You also need air to breathe, food to eat, and protection from the enviroment, in this case low pressure and radiation.