Carbon planet
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A carbon planet is a hypothetical type of planet that contains more carbon than oxygen. Carbon is the fourth most abundant element in the universe by mass after hydrogen, helium, and oxygen.
Artist's concept of a carbon planet. The surface is dark and reddish from hydrocarbon deposits.
PDS 70
HST SWEEPS Detail 2006
55 Cancri Ae
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55 Cancri Ae, officially named Janssen, is an exoplanet orbiting a Sun-like host star, 55 Cancri A. The mass of the exoplanet is about eight Earth masses and its diameter is about twice that of the Ea
Carbon planet
…nearby solar analog stars found 12% of stars have C/O ratios above 0.65, making them candidates for the carbon-rich planetary systems. The exoplanet 55 Cancri Ae, orbiting a host star with C/O molar ratio of 0.78, is a possible example of a carbon planet. A carbon planet would probably have an iron-rich core…
Artist's impression of 55 Cancri Ae as a lava planet
Artist's impression of 55 Cancri Ae with a thick atmosphere