Carbon-rich Exoplanets Might be Made of Diamonds

llustration of a carbon-rich planet with diamond and silica as main minerals. Water can convert a carbide planet into a diamond-rich planet. In the interior, the main minerals would be diamond and silica (a layer with crystals in the illustration). The core (dark blue) might be iron-carbon alloy. (Credit: Shim/ASU/Vecteezy)

TEMPE, Ariz. (Arizona State University PR) — As missions like NASA’s Hubble Space Telescope, TESS  and Kepler continue to provide insights into the properties of exoplanets (planets around other stars), scientists are increasingly able to piece together what these planets look like, what they are made of and if they could be habitable or even inhabited.