Bains, William, Petkowski, Janusz J., Seager, Sara, Ranjan, Sukrit, Sousa-Silva, Clara, Rimmer, Paul B., Zhan, Zhuchang, Greaves, Jane S.  ORCID: https://orcid.org/0000-0002-3133-413X and Richards, Anita M. S.
2022.
Venusian phosphine: a 'wow!' signal in chemistry?
Phosphorus, Sulfur, and Silicon and the Related Elements
197
(5-6)
, pp. 438-443.
10.1080/10426507.2021.1998051
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Abstract
The potential detection of ppb levels phosphine (PH3) in the clouds of Venus through millimeter-wavelength astronomical observations is extremely surprising as PH3 is an unexpected component of an oxidized environment of Venus. A thorough analysis of potential sources suggests that no known process in the consensus model of Venus’ atmosphere or geology could produce PH3 at anywhere near the observed abundance. Therefore, if the presence of PH3 in Venus’ atmosphere is confirmed, it is highly likely to be the result of a process not previously considered plausible for Venusian conditions. The source of atmospheric PH3 could be unknown geo- or photochemistry, which would imply that the consensus on Venus’ chemistry is significantly incomplete. An even more extreme possibility is that strictly aerial microbial biosphere produces PH3. This paper summarizes the Venusian PH3 discovery and the scientific debate that arose since the original candidate detection one year ago.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Physics and Astronomy |
| Publisher: | Taylor and Francis Group |
| ISSN: | 1042-6507 |
| Date of First Compliant Deposit: | 31 January 2023 |
| Date of Acceptance: | 17 October 2021 |
| Last Modified: | 13 May 2023 19:13 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/156410 |
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