# The upper limits exclude phosphine at the claimed levels.

> Most likely: The upper limits exclude phosphine at the claimed levels.

Source: https://mysteriesdept.com/mysteries/venus-phosphine/answers/ANS0CQY221Y38RV/the-upper-limits-exclude-phosphine-at-the-claimed-levels  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Questions](https://mysteriesdept.com/questions)[Phosphine in the clouds of Venus](https://mysteriesdept.com/mysteries/venus-phosphine)[Can the claimed phosphine be reconciled with the upper limits from other instruments?](https://mysteriesdept.com/mysteries/venus-phosphine/questions/QST0CQY1TZC4EZE/can-the-claimed-phosphine-be-reconciled-with-the-upper)Answer

Answer · Phosphine in the clouds of Venus

# The upper limits exclude phosphine at the claimed levels.

The upper limits exclude phosphine at the claimed levels.

**Most likely** Answers **1** questionPublished0

## Where it stands

**Most likely** Its tests partly supported it: one piece of evidence for, one against. It needs two reviews to be accepted.

## What it predicts

- No sensitive instrument detects phosphine at any epoch.

## What would rule it out

- An independent detection at an abundance above the limits.

## Evidence 1 for · 1 against

[SOFIA's 0.8 ppb limit is more stringent than earlier ground-based studies.](https://mysteriesdept.com/mysteries/venus-phosphine/evidence/EVD0CQY229R6233/sofias-0-8-ppb-limit-is-more-stringent-than-earlier-ground)

Supported

FOR

[The detection team disputes the SOFIA analysis.](https://mysteriesdept.com/mysteries/venus-phosphine/evidence/EVD0CQY22HJ7G0K/the-detection-team-disputes-the-sofia-analysis)

Speculative

AGAINST

## The questions it answers

[Can the claimed phosphine be reconciled with the upper limits from other instruments?](https://mysteriesdept.com/mysteries/venus-phosphine/questions/QST0CQY1TZC4EZE/can-the-claimed-phosphine-be-reconciled-with-the-upper)

Part of [If the line is real, is it phosphine or sulphur dioxide?](https://mysteriesdept.com/mysteries/venus-phosphine/questions/QST0CQY1TQJ1W8Q/if-the-line-is-real-is-it-phosphine-or-sulphur-dioxide)

Most likelyThe upper limits exclude phosphine at the claimed levels

## Cite it

```
Mysteries Department. (2026). The upper limits exclude phosphine at the claimed levels. [Answer ANS0CQY221Y38RV]. https://mysteriesdept.com/r/ANS0CQY221Y38RV
```

Key

**ANS** 0CQY221Y38RV

Kind

Answer · hypothesis

Origin

Published

Version

1

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