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Delusions of a Mars Colonist

21 Jun 2016, 16:49 UTC
Delusions of a Mars Colonist
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Abracadabra! We turn Mars into a second Earth (National Geographic Society)
A perennial talking point promoted by the space media is the belief that to save humanity, we must make a beeline to Mars. Supposedly, Mars is so “Earth-like” that it is the natural second home for humanity in space, a place to assure species survival in the event of some planetary catastrophe (such as a large meteorite impact). Because Mars could be “terraformed” to become even more Earth-like, we must focus our principal space efforts on undertaking human missions to Mars – ASAP (for the last 45 years).
For any sustainable human presence off-Earth to be successful, one must develop the means to arrive, survive and thrive. Most commentary on human Mars missions has focused entirely on the requirement to arrive because many of the technical problems associated with this must-accomplish first task remain unresolved. Presently, we don’t know how to build fault-tolerant, in-space serviceable systems necessary to support human life over the course of a multiple-year-long Mars mission. Protecting the crew from exposure to constant high-energy cosmic rays and sporadic solar particle events requires some means of shielding the vehicle – a daunting prospect in terms of mass ...

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