AceMos posted...
while i do think we could get people to mars
i dont know if we could even get a person back from mars
Mars has slightly lighter gravity than earth and a thin atmosphere (meaning less air resistance). You would need considerably less dv for the return trip. It wouldn't be anymore complicated than getting somewhere there in the first place. Provided you've solved all other food and storage concerns. The main problem here is purely logistical. Building a rocket that could take someone to mars and back is somewhat trivial. It might even be easier than sending rovers because the pilot could make real-time adjustments instead of the like, 30 minute delay the rover rockets have.
The problem is keeping a human alive for the duration. When you get into space the weight of the vessel matters a lot less. But the weight of the vessel does affect how much fuel is needed to push the craft around and how fast you can accelerate. Making a ship that has several years worth of food and water is...not tenable. I'm mean it's probably possible but it's just such an absurd expenditure nobody would do it. Also iirc humans can't survive in space that long. Our bones and eyeballs and stuff start going weird.
MarshMellow posted...
We can't even fix our own planet that already has life in the habitable zone. Maybe they should work on that before thinking about desperation moves like terraforming Mars. We still have a few billion years before the sun eats us.
This is AColier's main point. If they're so confident they can terraform mars, they should terraform earth. To not have global warming.