Elon Musk claims Mars colony dreams critical to avoid ‘Doomsday’ event
Written by Charlie Osborne
SpaceX CEO Elon Musk has claimed that building a self-sustaining colony on Mars is necessary to our future survival as a species.
Musk’s blueprint, titled “Making Humans a Multi-Planetary Species,” outlines the executive’s vision for making the human race a multi-planetary, space-faring society.
The paper, a summary of Musk’s presentation at the 67th International Astronautical Congress in Guadalajara last year, suggests that a future Doomsday event will force us to look at other planets to stave off extinction.
Out of all the options currently open to us, Venus is a cooking pot of pressure and acid, Mercury is too close to the sun and the planet’s moons are difficult to reach, and our own moon is small and has no atmosphere.
Musk argues that Mars, despite the distance, is the best option — especially if we are able to warm the planet up to thicken the atmosphere and access the planet’s frozen oceans.
With a day and night cycle similar to our own planet, we may also be able to cultivate plants as the atmosphere is primarily CO2, nitrogen, argon, and a few trace elements.
“It would be quite fun to be on Mars because you would have gravity that is about 37 percent of that of Earth, so you would be able to lift heavy things and bound around, furthermore, the day is remarkably close to that of Earth,” Musk says. “We just need to change the populations because currently, we have seven billion people on Earth and none on Mars.”
The cost of such travel, however, must come into the equation. It is estimated that sending a single person to Mars could cost up to $10 billion at the moment, but if you want to create a self-sustaining community, very few people could afford such an expense to join the project.
Therefore, Musk wants to eventually reduce the cost to the average price of a house in the US — roughly $200,000 — but in order to reach this goal and slash the expense by five million percent, a number of steps will need to be taken.
Musk says that the so-called “interplanetary spaceship” used to get to Mars would need to launch with fuel tanks that are basically empty in order to refuel while in space to keep costs down.
It will also be necessary to make the tankers and rockets reusable at least for a few return trips and to create propellant on Mars rather than make constant trips back and from Earth for fuel.
The executive says that due to Mars’ atmosphere and elements already available, it is possible to produce the methane and oxygen required. Kerosene will not work without oil reserves on the planet and methane is cheap enough.
“It would be pretty absurd to try to build a city on Mars if your spaceships just stayed on Mars and did not go back to Earth,” Musk writes. “You would have a massive graveyard of ships; you have to do something with them.”
The Raptor engine and rocket booster, used in the spaceship, are some of the most challenging elements of the Mars vision.
Not only will the Raptor engine be the “highest chamber pressure engine of any kind ever built,” but the full-flow combustion engine will need to condense oxygen and methane for fuel, have capacity for 100 passengers, and multiple ships will need to leave Earth during each launch window to Mars to shuttle one million people to the Red planet in a matter of decades, rather than centuries, to make colonisation a success.
Read more at ZDNet
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