Like many other ambitious people, Elon Musk wants humanity to become a multi-planetary civilization. Hes made no secret of his dream of sending colonists to Mars during his lifetime, but now,his vision is becoming a bit less abstract and a bit more concrete.
Musk, pictured talking at the International Astronautic Congress 2016 event. Image credits: Elon Musk/SpaceX.
Mr. Musks view, as it often is the case, is audacious. But he wants to make the audacious possible and even more than that, he wants to make it common.
I want to make Mars seem possible to do in our lifetimes, said Musk in his presentation (you can watch a replay of the talk here). I want anyone to go if they want to.
Of course, when we can barely scrape the resources for any manned mission to Mars, colonization seems outside the realm of possibility. But then again, many of the things Musk did seemed the same way, initially. We now have cheap, reusable rocketswhich go a long way towards making space flight more accessible. Hes making space tourism a reality by sending people to the Moon, and hes also planning to revolutionize trains which have remained largely unchanged for almost a century. Why should Mars be any different?
The first question is: why Mars?
An artistic depiction of a Mars colonist. Image credits: Elon Musk/SpaceX.
Many people believe humanitys future is looking increasingly dire. With overpopulation and climate change, our planets resources are more and more strained, and at one point, they might simply be insufficient. I mean, were using them unsustainably today, so theyre technically not efficient even now, but this is expected to become more and more of a problem as time moves on.
So if we have to go somewhere, why not go for the Moon? Its closer and weve been there before, so it should be easier.
Well, Musk argues, the Moon doesnt really count as a planet. Itdoesnt have any atmosphere whatsoever, its relatively poor in resources, and its gravity is six times weaker than that of the Earth (compared to Mars, which is just three times smaller). Furthermore, going on the Moon doesnt really make you a multi-planet civilization.
I think it is challenging to become multi-planetary on the moon because it is much smaller than a planet, Musk wrote. It does not have any atmosphere. It is not as resource-rich as Mars. It has got a 28-day day, whereas the Mars day is 24.5 hours. In general, Mars is far better-suited to ultimately to scale up to be a self-sustaining civilization.
So far, the main thing Musk has done in terms of space exploration is to reduce costs by a lot. But theres still a long way to go before we get down to a realistic figure. Musk says that with an Apollo-style approach, youd end up with an optimistic cost of about $10 billion per person. You cant build a civilization with that price tag. In fact, hes aiming for $200,000 the median cost of a house in the US. Of course, its still not clear how were going to get there.
It is a bit tricky because we have to figure out how to improve the cost of trips to Mars by five million percent, Musk cheekily commented.
He can talk the talk, but can he walk the walk? Image credits: Elon Musk/SpaceX.
Step by step, the price is steadily going down. Were not nearly close to a colony trip to Mars, but the progress is happening at a remarkable place. Still, big challenges still remain. First, wed have to deal with rocket reusability and there is significant, concrete progress in this direction. Sure, youd need different kind of rockets than the ones currently in use, but youd mostly apply the same principle at a larger scale. Then, youd have to refuel the shuttle in orbit, which SpaceX (Musks company) is also working on. Thirdly, youd have to produce the fuel on Mars, so that you dont have to ship it from Earth. This would drastically reduce the payload and the associated costs. The entire feasibility of the project might rely on this, and we have very little idea how to do it.
This is just discussing the space flight aspect of things, let alone the livability and potential terraforming that a city on Mars would require.
If everything goes according to plan, theInterplanetary Transport System (ITS) would carry 1,000,000 people to Mars; not at once but in transports of 10,000, in 40 to 100 years. Musk envisions a fun trip, with zero-gravity games and attractions for the colonists.
In the 1950s, Sci-Fi writersCyril M. Kornbluth and Frederik Pohl envisioned a dystopic futurein which humanity decides to colonize Venus. The worlds best marketers and publicity-makers were employed to make Venus, a hot horrid hell, attractive to colonists. Is this what were looking at here? Is this all marketing glitter and misleading flashes, or does Musk plan do what it says on the tin?
Musk is, as always, extremely aggressive in his plans and in his timings. He greatly relies on technology that hasnt even been invented, but might foreseeably emerge in a few years. It also might not.
The thing is we dont really know how this will play out. We might look back on his vision and say that it ignited everything, or we might simply forget it through the shroud of history. But these are not words spoken in vain. If anyone has the drive and the resources to pull something as crazy as this, its Musk. Whether or not he succeeds, someonewillsucceed, and that someone will have this kind of attitude.
There is a huge amount of risk. It is going to cost a lot, he wrote. There is a good chance we will not succeed, but we are going to do our best and try to make as much progress as possible.
You can read the full paper describing Musks plan, published in the journalNew Space, by clicking here.
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Elon Musk shares his view of Mars colonization: one million people living in a self sustainable city - ZME Science
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