# planetary surface

> where the solid (or liquid) material of the outer crust on certain types of astronomical objects contacts the atmosphere or outer space

**Wikidata**: [Q7201252](https://www.wikidata.org/wiki/Q7201252)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Planetary_surface)  
**Source**: https://4ort.xyz/entity/planetary-surface


## References

1. [Environment Ontology](https://raw.githubusercontent.com/INCATools/environments2wikidata/master/matches/curated-high-confidence-envo.tsv)
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)