Home › Entities › hypersurface › event horizon

event horizon

boundary of a region of spacetime from which one cannot escape once entered
Thing hypersurface Q181741
Press Enter · cited answer in seconds

Summary

event horizon is a hypersurface[1]. It draws 12,626 Wikipedia views per month (hypersurface category, ranking #1 of 1).[2]

Key Facts

  • Subclass of: horizon[3]
  • Said to be the same as: Schwarzschild radius[4]
  • Stack Exchange tag: https://physics.stackexchange.com/tags/event-horizon[5], https://astronomy.stackexchange.com/tags/event-horizon[6]
  • On focus list of Wikimedia project: Wikipedia:Vital articles/Level/4[7]
  • P14541: 2bbUbd[8]

Why It Matters

event horizon has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[9] It is known by 53 alternative names across languages and contexts.[10]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [9] ↑ . Wikidata sitelinks. wikidata.org.
  3. [10] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). event horizon. Retrieved October 16, 2026, from https://4ort.xyz/entity/event-horizon-q181741-2
MLA “event horizon.” 4ort.xyz Knowledge Graph, 4ort.xyz, 16 Oct. 2026, https://4ort.xyz/entity/event-horizon-q181741-2.
BibTeX @misc{4ortxyz_event-horizon-q181741-2_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{event horizon}}, year = {2026}, url = {https://4ort.xyz/entity/event-horizon-q181741-2}, note = {Accessed: 2026-10-16}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): event horizon — https://4ort.xyz/entity/event-horizon-q181741-2 (retrieved 2026-10-16)

Canonical URL: https://4ort.xyz/entity/event-horizon-q181741-2 · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 22d ago · Printstream · 2026-09-27 view diff on Wikidata ↗
    Wikipedia languages → ['af', 'ar', 'ast', 'az', 'azb', 'be', 'bg', 'bn', 'br', 'bs', 'ca', 'cs', 'cv',
    Gnd id → 4521706-3
    Claims rich → —
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/56529|batch #56529]]: Import GNDs from dewiki"
  2. 14w ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    P14541 → 2bbUbd
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.