This post is in response to an article posted on the Discover website. The author claims we should forget Mars as a destination, and that of course gained my attention. He made some assumptions that I don’t agree with, and I’m going to go through the post and point out a few things. This is in the spirit of open discussion of course, and I welcome feedback on my own ideas.
First, lets stop calling it colonization. That world has too much negativity associated with it. I much prefer to talk about human settlements on other planets.
I don’t agree with the authors premise for off-world settlements.
It’s not because it would be cool to have people on multiple worlds (although it would). It’s not because Earth is becoming overpopulated with humans (although it is). It’s because off-world colonies would improve the chances of human civilization surviving in the event of a planetary disaster on Earth.
The fear based reasoning doesn’t work for me. Of course we want to have humans survive a disaster on Earth, but that speaks to our base instincts. We are better than that. We have a whole solar system to explore and live in. I would love to see humanity fly among the stars, but we must first master living in our own backyard, our solar system. We have mastered living on Earth, but we chose to use that power negatively, causing famine, climate change and pollution. These are the consequences of the choices we’ve made. To me, going to Mars is a hopeful journey, not one that should be done in fear. Fear will only lead to more negative outcomes.
Creating a Mars Colony
David jumps right to the conclusion that a settlement would be terraforming from day one. His information is sound, but the conclusion is off on the wrong direction. Neither Mars One, SapceX or NASA has terraforming in any of their plans. It’s so far off that it doesn’t make any sense to talk about. By the time we are in a position to terraform anything positively (Climate change is accidental terraforming) our technology will be vastly different than today. The first settlers will be busy with staying alive, not planetary engineering. The cart is fully in front of the horse here.
The Problem of Distance
He gets ahead of himself here again. He’s using a study of an interstellar generation ship to generalize a Martian settlement. The two are very different. It could take 10,000 – 40,000 people to maintain genetic diversity, I don’t know. I do know that the main driver for population increase of these settlements would be immigration. The population would grow from people leaving Earth as more room became available. He then goes on to see how long SpaceX would need to hit 40,000 people using the immigration model, not realizing you don’t need to hit 40,000 people if they keep immigrating; that’s only for a closed system where no new people are added.
Distance is something you have to deal with when working in deep space. It’s a frontier that humans just don’t understand. The vast distances between objects don’t make sense to what we see and interact with everyday. It will take a new sort of thinking to deal with it. Anyone making the trip to the Moon, Mars or beyond knows it’s dangerous. We’ve gotten quite use to flying anywhere in the world and being able to rent a hotel and buy a lunch. The universe isn’t setup like that and we won’t have these luxuries as we travel beyond Earth. Accepting that is much easier than trying to bring all the comforts of Earth with us.
Close to Home
I don’t think anyone in the space exploration community is suggesting that we pick one spot over the other. If you want to go to the Moon, go for it! Making a space station, have at it! Private companies can do what they like, and I encourage us to go after all the targets. Governments have to chose specific targets, due to budgets and politics. But governments aren’t going to set up a settlement either, NASA has said it will bring all of their astronauts back. At the moment, it’s only private companies talking about settling on Mars. There could be MoonCorp that shows up tomorrow wanting to set up a spa on the Moon, and they are free to do that. The location is a trade off however, and if we want to get to the stars, Mars is the best place to start that journey.
The Problem of Gravity
Here’s a common misconception; that the adaptations of astronauts to micro gravity is negative. There is bone loss and muscle atrophy, yes, and that’s part of the adaptation process. If they never left micro gravity environment, it wouldn’t be a problem. The loss of body mass is a problem if they return to Earth. If future settlers don’t plan on returning to Earth, the adaptation to their new environment is just that, and adaptation. There will be changes that we can’t foresee, but for those of us who want to live on Mars, it’s all part of the process.
A New Home in the Solar System
There are plans for Moon bases and space stations. The great thing about space is that there is room for everyone. Let’s get out there, and let everyone create what they want. There are no limits in space.