# Zahnle 2011: Is there methane on Mars?

> Kevin Zahnle, Richard S. Freedman, David C. Catling, 2011. 3 records on Mysteries Department cite it. The early sceptical case.

Source: https://mysteriesdept.com/sources/SRC0D7EXKYC3V8P/is-there-methane-on-mars  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Sources](https://mysteriesdept.com/sources)[Mars methane puzzle](https://mysteriesdept.com/mysteries/mars-methane)Zahnle 2011

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# Is there methane on Mars?

Kevin Zahnle, Richard S. Freedman, David C. Catling, 2011. _Icarus 212(2), 493–503_.

A critique of the telescopic and orbital methane detections, questioning whether any was secure.

**Mars methane puzzle** Articledoi: **[10.1016/j.icarus.2010.11.027](https://doi.org/10.1016/j.icarus.2010.11.027)** Checked against the original0

## What it's used for here

The early sceptical case.

## Cited by on this site 3 records

[The early remote detections were not secure.](https://mysteriesdept.com/mysteries/mars-methane/answers/ANS0D7EY5924K5D/the-early-remote-detections-were-not-secure)

Answer

ANS

[Kevin Zahnle](https://mysteriesdept.com/mysteries/mars-methane/people/FIG0D7EXSJ27CS1/kevin-zahnle)

FIG

[The Mars methane puzzle](https://mysteriesdept.com/mysteries/mars-methane)

The mystery article

MYS

## Cite it

```
Zahnle, K., Freedman, R. S., & Catling, D. C. (2011). Is there methane on Mars?. Icarus 212(2), 493–503. https://doi.org/10.1016/j.icarus.2010.11.027
```

[Find it at doi.org](https://doi.org/10.1016/j.icarus.2010.11.027)

Key

**SRC** 0D7EXKYC3V8P

Kind

Journal article

Rights

The publisher's

Kept

27 Oct 2026, for editors

Checked

Against the published article

Added by

[apollo](https://mysteriesdept.com/u/apollo)

The record

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