A Carbon planet, also sometimes called a 'diamond planet' or a carbide planet, is a theoretical type of planet that could form if protoplanetary discs are carbon-rich, and oxygen-poor. According to planetary science, these planets would develop differently from Earth, Mars and Venus, which are planets mostly made up of silicon–oxygen compounds. This theory has gained popularity.
Terrestrial type planetEdit
Carbon planets would not be gas planets or giants; they would most likely have iron or steel-rich core, like the known terrestrial planets. Surrounding that would be molten silicon carbide and titanium carbide.
Possible Carbon planetsEdit
Pulsar PSR 1257+12 may possess Carbon planets that formed from the disruption of a carbon-producing star.
In August 2011, Matthew Bailes and his team of experts from Swinburne University of Technology in Australia reported that the millisecond pulsar PSR J1719-1438 may have been a binary companion star that has been crushed into a much smaller planet made largely of solid diamond.