It’s been known for some time to be highly metallic, and recent measurements indicate its density is about 4 times that of water (water has a density of 1 gram per cubic centimeter, making it a standard unit); rocky asteroids have a density half that. Iron has a density of 8, so it’s likely that Psyche is a mix of iron and rock. Also, spectra of Psyche match a mix of rock and metal best as well.
Psyche may have once been the core of a much larger asteroid. After it formed it was molten, and heavier material like metals sank to the center, while lighter rocky material rose to the surface. It’s possible that not long after its materials separated (what’s called differentiation) it was hit by a series of impacts that stripped off most of its rocky upper layers, exposing the core to space. There may have been some mixing at the surface, too.
8-6-2021 (August 6, 2021) is the Snakiest day of the year and it’s also this year’s CircuitPython Day! The day highlights all things CircuitPython and Python on Hardware. See you there!
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.