# Chthonian planet

> hypothetical class of celestial objects resulting from the stripping away of a gas giant's hydrogen and helium atmosphere and outer layers

**Wikidata**: [Q928495](https://www.wikidata.org/wiki/Q928495)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Chthonian_planet)  
**Source**: https://4ort.xyz/entity/chthonian-planet


## References

1. Freebase Data Dumps. 2013
2. [Environment Ontology](https://raw.githubusercontent.com/INCATools/environments2wikidata/master/matches/curated-high-confidence-envo.tsv)