Asteroind Mining: Good Idea or Bad?



You can visit guest blogger Stephen Tremp at Breakthrough Blogs 

After spending a year gazing at Vesta , NASA's Dawn spacecraft was set to cruise toward the most massive space rock in the asteroid belt between Mars and Jupiter — a voyage that will take nearly three years. 

Dawn slipped into orbit last year around Vesta — about the size of Arizona — and beamed back stunning close-ups of the lumpy surface. Its next destination is the Texas-size Ceres, also known as a dwarf planet (folks, these are some very large pieces of rock!!!). 

Vesta and Ceres are the largest bodies in the asteroid belt littered with chunks of rocks that never quite bloomed into full-fledged planets. As cosmic time capsules, they're ideal for scientists trying to piece together how Earth and the other planets formed and evolved. 

This Being Said: A group of wealthy, adventurous entrepreneurs announced a new venture called Planetary Resources, Inc., which plans to send swarms of robots to space to scout asteroids for precious metals and set up mines to bring resources back to Earth, in the process adding trillions of dollars to the global GDP, helping ensure humanity’s prosperity and paving the way for the human settlement in space. 

“The resources of Earth pale in comparison to the wealth of the solar system,” said Eric Anderson, who founded the commercial space tourism company Space Adventures. 

Nearly 9,000 asteroids larger than 150 feet in diameter orbit near the Earth. Some could contain as much platinum as is mined in an entire year on Earth, making them potentially worth several billion dollars each. 

The new company is backed by Google’s CEO Larry Page and executive chairman Eric Schmidt, former Microsoft chief architect Charles Simonyi, and Ross Perot Jr. The venture also counts on filmmaker James Cameron, former astronaut Tom Jones, former JPL engineer Chris Lewicki, and planetary scientist Sara Seager as advisors.

Platinum Alone Is Worth:  around $23,000 a pound — nearly the same as gold. Mining the top few feet of a single modestly sized, half-mile-diameter asteroid could yield around 130 tons of platinum, worth roughly $6 billion. One possibility might be to find a useful asteroid and push it closer to Earth. A fairly low-power solar-electric ion engine could nudge a hunk of rock into orbit around the Earth, effectively creating a small second moon that could be easily accessed. 

Asteroids contain water that can be used for drinking and broken into its constituents. Oxygen is valuable for life support in space-based habitats, while liquid oxygen and hydrogen are both used to produce rocket fuel. Having a “gas station” in space could help enable missions to Mars and beyond. Such a refueling depot might allow people to permanently live and work in space, another goal of Planetary Resources. 

Question: Do you think its a good idea to mine asteroids by pulling these monstrosities into our orbit? Better speak up now or forever hold your peace because it's probably going to happen. 

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