The habitability of Venus
Venus today is inhospitable at the surface, its average temperature of 750 K being
incompatible to the existence of life as we know it. However, the potential for past surface …
incompatible to the existence of life as we know it. However, the potential for past surface …
On the potential roles of phosphorus in the early evolution of energy metabolism
Energy metabolism in extant life is centered around phosphate and the energy-dense
phosphoanhydride bonds of adenosine triphosphate (ATP), a deeply conserved and ancient …
phosphoanhydride bonds of adenosine triphosphate (ATP), a deeply conserved and ancient …
Astrobiological potential of Venus atmosphere chemical anomalies and other unexplained cloud properties
Long-standing unexplained Venus atmosphere observations and chemical anomalies point
to unknown chemistry but also leave room for the possibility of life. The unexplained …
to unknown chemistry but also leave room for the possibility of life. The unexplained …
An Overview of Exoplanet Biosignatures
In the last three decades, knowledge of planetary systems other than our own has increased
rapidly with the discovery of over 5,000 exoplanets (Christiansen 2022). These worlds vary …
rapidly with the discovery of over 5,000 exoplanets (Christiansen 2022). These worlds vary …
Sources of Nitrogen-, Sulfur-, and Phosphorus-containing feedstocks for prebiotic chemistry in the planetary environment
ZR Todd - Life, 2022 - mdpi.com
Biochemistry on Earth makes use of the key elements carbon, hydrogen, oxygen, nitrogen,
phosphorus, and sulfur (or CHONPS). Chemically accessible molecules containing these …
phosphorus, and sulfur (or CHONPS). Chemically accessible molecules containing these …
Constraints on the production of phosphine by Venusian volcanoes
The initial reports of the presence of phosphine in the cloud decks of Venus have led to the
suggestion that volcanism is the source of phosphine, through volcanic phosphides ejected …
suggestion that volcanism is the source of phosphine, through volcanic phosphides ejected …
Venus' atmospheric chemistry and cloud characteristics are compatible with venusian life
W Bains, JJ Petkowski, S Seager - Astrobiology, 2024 - liebertpub.com
Venus is Earth's sister planet, with similar mass and density but an uninhabitably hot
surface, an atmosphere with a water activity 50–100 times lower than anywhere on Earths' …
surface, an atmosphere with a water activity 50–100 times lower than anywhere on Earths' …
Possible effects of volcanic eruptions on the modern atmosphere of Venus
This work reviews possible signatures and potential detectability of present-day volcanically
emitted material in the atmosphere of Venus. We first discuss the expected composition of …
emitted material in the atmosphere of Venus. We first discuss the expected composition of …
Photochemical and thermochemical pathways to S2 and polysulfur formation in the atmosphere of Venus
Polysulfur species have been proposed to be the unknown near-UV absorber in the
atmosphere of Venus. Recent work argues that photolysis of one of the (SO) 2 isomers, cis …
atmosphere of Venus. Recent work argues that photolysis of one of the (SO) 2 isomers, cis …
Uncertainty in phosphine photochemistry in the Venus atmosphere prevents a firm biosignature attribution
F Wunderlich, JL Grenfell, H Rauer - Astronomy & Astrophysics, 2023 - aanda.org
Context. The possible detection of phosphine (PH 3) in the clouds of Venus has raised the
question as to which processes could produce such large abundances of PH 3. Previous …
question as to which processes could produce such large abundances of PH 3. Previous …