Asteroid Mining Has Astronomical Cost Issue

tech.hindustantimes.com:

I confess: I'm a Star Trek nerd — and commodities enthusiast, too. Thus, asteroid mining should be my personal heaven. On Sunday, I watched with the excitement of a five-year old how a NASA space probe brought back the largest-ever stash of asteroid rubble to Earth. But was this feat a step closer to commercial space mining? Not even close.

Asteroid mining companies always promise the stars: Handsome profits await galactic prospectors who can bring gold, copper and other minerals from outer space. The treasure would help expedite the green energy transition by boosting the supply of critical metals, these supporters claim — with some even proclaiming that the first trillionaire will be an asteroid-mining tycoon. Utter nonsense.

Back on planet Earth, what really awaits is (pardon the pun) out-of-this-world costs. Even if the industry can eventually cut expenses and jump over technological hurdles,asteroid mining will remain commercial science fiction for some time. Consider the OSIRIS-REx space mission, the little probe I viewed that — after an incredible 4 billion-mile seven-year roundtrip — released a capsule in the Utah desert bearing a sample from asteroid 101955 Bennu. This technological triumph will, I hope, inspire more children to enthusiastically pursue science. But at a cost of $1.1 billion, including launch and operation, the unmanned spacecraft wasn't a bargain.

If the capsule contains the expected 250 grams of extraterrestrial dirt, the retrieval cost would come to about $4.4 million a gram. Nothing to complain about as researchers attempt to answer questions like why life developed on Earth. But it's enough to bankrupt any commercial mining operation several times over. Compare this with the earthly price of