Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1038/d41586-021-02720-2 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The erosion of large primary atmospheres typically leaves behind substantial secondary atmospheres on temperate rocky planets.
Nat Commun
September 2024
Department of Astronomy and Astrophysics, University of California, Santa Cruz, Santa Cruz, CA, 95064, USA.
Exoplanet exploration has revealed that many-perhaps most-terrestrial exoplanets formed with substantial H-rich envelopes, seemingly in contrast to solar system terrestrials, for which there is scant evidence of long-lived primary atmospheres. It is not known how a long-lived primary atmosphere might affect the subsequent habitability prospects of terrestrial exoplanets. Here, we present a new, self-consistent evolutionary model of the transition from primary to secondary atmospheres.
View Article and Find Full Text PDFGeneral instability of dipeptides in concentrated sulfuric acid as relevant for the Venus cloud habitability.
Sci Rep
July 2024
Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA.
Recent renewed interest in the possibility of life in the acidic clouds of Venus has led to new studies on organic chemistry in concentrated sulfuric acid. We have previously found that the majority of amino acids are stable in the range of Venus' cloud sulfuric acid concentrations (81% and 98% w/w, the rest being water). The natural next question is whether dipeptides, as precursors to larger peptides and proteins, could be stable in this environment.
View Article and Find Full Text PDFThe Concept of Life on Venus Informs the Concept of Habitability.
Astrobiology
June 2024
Department of Earth Sciences, University of Toronto, Toronto, Canada.
An enduring question in astrobiology is how we assess extraterrestrial environments as being suitable for life. We suggest that the most reliable assessments of the habitability of extraterrestrial environments are made with respect to the empirically determined limits to known life. We discuss qualitatively distinct categories of habitability: that is constrained by the observed limits to biological activity; sensu stricto, which is defined with reference to the known or unknown limits to the activity of all known organisms; and sensu lato (habitability in the broadest sense), which is circumscribed by the limit of all possible life in the universe, which is the most difficult (and perhaps impossible) to determine.
View Article and Find Full Text PDFHydrologic cycle weakening in hothouse climates.
Sci Adv
April 2024
Laboratory for Climate and Ocean-Atmosphere Studies, Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing 100871, China.
The hydrologic cycle has wide impacts on the ocean salinity and circulation, carbon and nitrogen cycles, and the ecosystem. Under anthropogenic global warming, previous studies showed that the intensification of the hydrologic cycle is a robust feature. Whether this trend persists in hothouse climates, however, is unknown.
View Article and Find Full Text PDFIntroducing the Collection of Papers from the Second Workshop on Habitability of the Venus Cloud Layer and Related Research.
Astrobiology
April 2024
NASA/Goddard Space Flight Center, Greenbelt, Maryland, USA. (PI, DAVINCI mission to Venus).
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!