# event horizon

> boundary of a region of spacetime from which one cannot escape once entered

**Wikidata**: [Q181741](https://www.wikidata.org/wiki/Q181741)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Event_horizon)  
**Source**: https://4ort.xyz/entity/event-horizon-q181741-2


## References

1. Freebase Data Dumps. 2013
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)