Heavy metal vapors unexpectedly found in comets throughout our Solar System -- and beyond

A new study has shown that iron and nickel exist in the atmospheres of comets throughout our Solar System, even those far from the Sun. A separate study reported that nickel vapor is also present in the icy interstellar comet 2I/Borisov. This is the first time heavy metals have been found in the cold atmospheres of distant comets.

from Latest Science News -- ScienceDaily https://www.sciencedaily.com/releases/2021/05/210519120820.htm