Bortle Dark-Sky Scale

scale of night sky brightness
Thing measure Q2722595
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Bortle Dark-Sky Scale

Summary

Bortle Dark-Sky Scale is a measure[1]. It ranks in the top 6% of measure entities by monthly Wikipedia readership (801 views/month).[2]

Key Facts

  • Bortle Dark-Sky Scale is credited with the discovery of John E. Bortle[3].
  • Bortle Dark-Sky Scale's image is recorded as How light pollution affects the dark night skies (dark-skies) (flipped left-right).jpg[4].
  • Bortle Dark-Sky Scale's instance of is recorded as measure[5].
  • John E. Bortle is named after Bortle Dark-Sky Scale[6].
  • Bortle Dark-Sky Scale's time of discovery or invention is recorded as +2001-00-00T00:00:00Z[7].
  • Bortle Dark-Sky Scale's Freebase ID is recorded as /m/02q1vs6[8].
  • Bortle Dark-Sky Scale's official website is recorded as https://skyandtelescope.org/astronomy-resources/light-pollution-and-astronomy-the-bortle-dark-sky-scale/[9].
  • Bortle Dark-Sky Scale's facet of is recorded as sky brightness[10].
  • Bortle Dark-Sky Scale's facet of is recorded as light pollution[11].
  • Bortle Dark-Sky Scale's Microsoft Academic ID is recorded as 2779386287[12].

Body

Works and Contributions

Bortle Dark-Sky Scale is credited with the discovery of John E. Bortle[3].

Why It Matters

Bortle Dark-Sky Scale ranks in the top 6% of measure entities by monthly Wikipedia readership (801 views/month).[2] It has Wikipedia articles in 19 language editions, a strong signal of global cultural recognition.[13] It is known by 5 alternative names across languages and contexts.[14]

References

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

Direct Wikidata claims

  1. [4] . wikidata.org.
  2. [5] . wikidata.org.
  3. [3] . wikidata.org.
  4. [6] . wikidata.org.
  5. [7] . wikidata.org.
  6. [8] . Freebase Data Dumps. wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . Retrieved . wikidata.org.
  9. [11] . Retrieved . wikidata.org.
  10. [12] . wikidata.org.

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [13] . Wikidata sitelinks. wikidata.org.
  3. [14] . 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). Bortle Dark-Sky Scale. Retrieved May 3, 2026, from https://4ort.xyz/entity/bortle-dark-sky-scale
MLA “Bortle Dark-Sky Scale.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/bortle-dark-sky-scale.
BibTeX @misc{4ortxyz_bortle-dark-sky-scale_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Bortle Dark-Sky Scale}}, year = {2026}, url = {https://4ort.xyz/entity/bortle-dark-sky-scale}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Bortle Dark-Sky Scale — https://4ort.xyz/entity/bortle-dark-sky-scale (retrieved 2026-05-03)

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