Psyche May Not Be So Metal After All
An analysis of asteroid 16 Psyche’s gravitational effects on nearby bodies determines it must be less dense and less iron-rich than previously determined by its albedo.
A new mission is expected to launch this year to go and examine an interesting asteroid, 16 Psyche. That asteroid is thought to be made almost entirely of iron, suggesting that it could be the core of a larger body that either never fully formed or was somehow destroyed in a collision. There was even one article running around last year that estimated the value of Psyche’s metals as somewhere around $10 quintillion. No, seriously. Someone wrote that.
However, before all those wanna-be asteroid miners get their hopes up, new research published in JGR: Planets now suggests that Psyche is less metallic than previously thought. While light reflecting off the surface of the asteroid does suggest a darkness that belies a metallic composition, measurements of the mass and density do not match up with that hypothesis. In fact, per the press release: The way [Psyche’s] gravity tugs on neighboring bodies suggests that Psyche is far less dense than a giant hunk of iron should be. So if Psyche is indeed all metal, it would have to be highly porous — a bit like a giant ball of steel wool with…
