# protoplanetary disk

> rotating circumstellar disk of dense gas surrounding a young newly formed star

**Wikidata**: [Q505781](https://www.wikidata.org/wiki/Q505781)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Protoplanetary_disk)  
**Source**: https://4ort.xyz/entity/protoplanetary-disk


## References

1. Freebase Data Dumps. 2013
2. BabelNet
3. [Environment Ontology](https://raw.githubusercontent.com/INCATools/environments2wikidata/master/matches/curated-high-confidence-envo.tsv)
4. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)