Innovations in space take years to mature and are extremely costly. The development of these devices and their use in space, as well as their maintenance, demand a long term roadmap to define the different investments. Many countries are still unable to afford these technologies to go explore space, in search of new solutions for humankind. And if Elon Musk wants to reduce the cost to travel to Mars from $2bn to $200,000 (https://nerdist.com/elon-musk-is-destroying-the-cost-of-getting-to-space-muskwatch/), this is still an important investment unaffordable for a vast majority of people in the world (and especially people who are the most dependent on climate risk).
We could firstly wonder if Musk’s plan is a viable alternative, in terms of safety and feasibility, and if it could become a reasonable solution for our environmental issues on Earth. But most importantly, doesn’t this kind of alternative reduce the chances, efforts and resources we put onto earthly solutions that could benefit more people? What other ethical issues does Musk’s project raise (aggravation of climatic inequalities, etc.)?