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Purple Earth hypothesis

astrobiological hypothesis that life forms of early Earth were retinal-based rather than chlorophyll-based, making Earth appear purple rather than green
Place hypothesis Q7261408
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Purple Earth hypothesis

Summary

Purple Earth hypothesis is a hypothesis[1]. It draws 239 Wikipedia views per month (hypothesis category, ranking #43 of 235).[2]

Key Facts

  • Purple Earth hypothesis's instance of is recorded as hypothesis[3].
  • Purple Earth hypothesis's Freebase ID is recorded as /m/02r1ly3[4].
  • Purple Earth hypothesis's facet of is recorded as astrobiology[5].

Body

Designation and Status

Purple Earth hypothesis's instance of is recorded as hypothesis[3].

Why It Matters

Purple Earth hypothesis draws 239 Wikipedia views per month (hypothesis category, ranking #43 of 235).[2] It has Wikipedia articles in 8 language editions, a strong signal of global cultural recognition.[6]

Related Entities

astrobiology

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.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [6] ↑ . Wikidata sitelinks. 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). Purple Earth hypothesis. Retrieved May 3, 2026, from https://4ort.xyz/entity/purple-earth-hypothesis
MLA “Purple Earth hypothesis.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/purple-earth-hypothesis.
BibTeX @misc{4ortxyz_purple-earth-hypothesis_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Purple Earth hypothesis}}, year = {2026}, url = {https://4ort.xyz/entity/purple-earth-hypothesis}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Purple Earth hypothesis — https://4ort.xyz/entity/purple-earth-hypothesis (retrieved 2026-05-03)

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