# European Space Agency 2026: Webb sniffs methane from interstellar Comet 3I/ATLAS

> European Space Agency, 2026. 1 records on Mysteries Department cite it. The latest composition result for 3I.

Source: https://mysteriesdept.com/sources/SRC0CSKBP4E7DVV/webb-sniffs-methane-from-interstellar-comet-3i-atlas  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

---

[Sources](https://mysteriesdept.com/sources)[1I/'Oumuamua](https://mysteriesdept.com/mysteries/oumuamua)European Space Agency 2026

**0**

# Webb sniffs methane from interstellar Comet 3I/ATLAS

European Space Agency, 2026. _ESA Multimedia_.

The June 2026 release of Webb MIRI results on 3I from December 2025: the first methane detected on an interstellar object, at a methane-to-water ratio rare in the Solar System, and a confirmed high CO2-to-water ratio, pointing to a formation environment unlike most Solar System comets. Published in ApJL.

**1I/'Oumuamua** Web pageChecked against the original0

## What it's used for here

The latest composition result for 3I.

## Cited by on this site 1 record

[1I/'Oumuamua](https://mysteriesdept.com/mysteries/oumuamua)

The mystery article

MYS

## Cite it

```
European Space Agency (2026). Webb sniffs methane from interstellar Comet 3I/ATLAS. ESA Multimedia. https://www.esa.int/ESA_Multimedia/Images/2026/06/Webb_sniffs_methane_from_interstellar_Comet_3I_ATLAS
```

[Read it free at esa.int](https://www.esa.int/ESA_Multimedia/Images/2026/06/Webb_sniffs_methane_from_interstellar_Comet_3I_ATLAS)

Key

**SRC** 0CSKBP4E7DVV

Kind

Web page

Rights

The publisher's

Kept

29 Oct 2026, for editors

Checked

Against the published original

Added by

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

The record

Bibliographic records are CC0. Take this one as CSL-JSON, BibTeX or RIS.

[CSL-JSON](https://mysteriesdept.com/sources/SRC0CSKBP4E7DVV/webb-sniffs-methane-from-interstellar-comet-3i-atlas/csl.json)