# observable universe

> spherical region of the Universe comprising all matter that can be observed from Earth at the present time

**Wikidata**: [Q221392](https://www.wikidata.org/wiki/Q221392)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Observable_universe)  
**Source**: https://4ort.xyz/entity/observable-universe


## References

1. Freebase Data Dumps. 2013
2. BBC Things
3. [Source](http://elementy.ru/lib/430484)
4. [Source](http://www.wolframalpha.com/input/?i=size+of+universe)
5. BabelNet
6. Quora
7. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)