Heavy metal vapours have been found inside comets in the solar system and beyond by astronomers who say the discovery 'went under the radar' for 20 years. Material in our Solar System, for example that found in the Sun and in meteorites, usually contains about ten times more iron than nickel. This new result therefore has implications for astronomers' understanding of the early Solar System, though the team is still decoding what these are. 'Comets formed around 4.6 billion years ago, in the very young Solar System, and haven't changed since that time. The Polish and Belgian studies show that 2I/Borisov and Solar System comets have even more in common than previously thought.

Source: Daily Mail May 19, 2021 15:00 UTC