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Scientists have long been intrigued by an enormous potato-shaped asteroid, dubbed 16 Psyche, that they suspect to be teeming with metal — and therefore potentially worth a ludicrous amount of money to future asteroid mining operations.
The 173-mile object, which orbits the Sun in the asteroid belt between Mars and Jupiter, features two enormous crater-like depressions, which researchers say could be closely related to its still largely unknown origin story.
In a new paper published in the journal JGR Planets, an international team of researchers tried to get to the bottom of one of the key questions regarding 16 Psyche that remains unanswered. Is it a core of a planetesimal, a billions-of-years-old building block of a planet, in which case it would have a “large metallic core buried under rocks,” or is it a “homogeneous mixture of iron and rock?”
Put differently, could 16 Psyche be the ancient exposed remains of a planetary core whose crust and mantle were blown off, or is it a separate primordial lump of far less dense and potentially riddled-with-holes rock that either started out metal-rich or became blended with metal after colliding with other asteroids?
While the latest paper doesn’t necessarily exclude any of these possibilities — its simulations support both hypotheses — the goal was to know what to look out for once NASA’s mission to the space rock, which launched in October 2023, arrives roughly three and a half years from now.
Once there, the spacecraft could finally allow us to solve the mystery surrounding 16 Psyche’s history once and for all. As Universe Today points out, 16 Psyche’s size makes it far more approachable than the thousands of miles we’d have to drill into the Earth. (So far, we’ve only made it around 0.2 percent of the way to our own planet’s center.)
For their paper, the researchers took into consideration 16 Psyche’s unusual dented shape, previous findings that concluded it may be teeming with metal material, and its porosity.
“Large impact basins or craters excavate deep into the asteroid, which gives clues about what its interior is made of,” said first author and University of Arizona doctoral candidate Namya Baijal in a statement. “By simulating the formation of one of its largest craters, we were able to make testable predictions for Psyche’s overall composition when the spacecraft arrives.”
“One of our main findings was that the porosity — the amount of empty space inside the asteroid — plays a significant role in how these craters form,” she added. “Porosity is often ignored because it’s difficult to include in models, but our simulations show it can strongly affect the impact process and shape of craters left behind.”
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