# SOFIA's 0.8 ppb limit is more stringent than earlier ground-based studies.

> SOFIA's 0.8 ppb limit is more stringent than earlier ground-based studies.

Source: https://mysteriesdept.com/mysteries/venus-phosphine/evidence/EVD0CQY229R6233/sofias-0-8-ppb-limit-is-more-stringent-than-earlier-ground  
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

# SOFIA's 0.8 ppb limit is more stringent than earlier ground-based studies.

SOFIA's 0.8 ppb limit is more stringent than earlier ground-based studies.

Supported0

## What it bears on 1 answer

[The upper limits exclude phosphine at the claimed levels.](https://mysteriesdept.com/mysteries/venus-phosphine/answers/ANS0CQY221Y38RV/the-upper-limits-exclude-phosphine-at-the-claimed-levels)

Most likely

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## Cite it

```
Mysteries Department. (2026). SOFIA's 0.8 ppb limit is more stringent than earlier ground-based studies. [Evidence EVD0CQY229R6233]. https://mysteriesdept.com/r/EVD0CQY229R6233
```

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