# Pioneer Venus spectra suggest several reduced species and redox disequilibrium in the middle clouds.

> Pioneer Venus spectra suggest several reduced species and redox disequilibrium in the middle clouds.

Source: https://mysteriesdept.com/mysteries/venus-phosphine/evidence/EVD0CQY23905V7C/pioneer-venus-spectra-suggest-several-reduced-species-and  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Phosphine in the clouds of Venus](https://mysteriesdept.com/mysteries/venus-phosphine)Evidence

Evidence · Phosphine in the clouds of Venus

# Pioneer Venus spectra suggest several reduced species and redox disequilibrium in the middle clouds.

Pioneer Venus spectra suggest several reduced species and redox disequilibrium in the middle clouds.

Suggestive0

## What it bears on 1 answer

[Unknown photochemistry or geochemistry.](https://mysteriesdept.com/mysteries/venus-phosphine/answers/ANS0CQY23164PM1/unknown-photochemistry-or-geochemistry)

Still possible

FOR

## Cite it

```
Mysteries Department. (2026). Pioneer Venus spectra suggest several reduced species and redox disequilibrium in the middle clouds. [Evidence EVD0CQY23905V7C]. https://mysteriesdept.com/r/EVD0CQY23905V7C
```

Key

**EVD** 0CQY23905V7C

Kind

Evidence

Tier

Suggestive

Version

1

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