Results 11 to 20 of about 28,301 (98)

Tracing the inner edge of the habitable zone with sulfur chemistry. [PDF]

Sci Adv
The circumstellar liquid-water habitable zone guides our search for potentially inhabited exoplanets, but remains observationally untested. We show that the inner edge of the habitable zone can now be mapped among exoplanets using their lack of surface water, which, unlike the presence of water, can be unambiguously revealed by atmospheric sulfur ...
Jordan S, Shorttle O, Rimmer PB.
europepmc   +2 more sources

Ultraviolet Photometry and Habitable Zones of over 2700 Planet-hosting Stars [PDF]

The Astrophysical Journal Supplement Series
The ongoing discovery of exoplanets has sparked significant interest in finding suitable worlds that could potentially support life. Stellar ultraviolet (UV; 100–3000 Å) radiation may play a crucial role in determining the habitability of their planets ...
Xue Li, Song Wang, Henggeng Han, Jifeng Liu   +3 more
doaj   +2 more sources

Binary Gravitational Perturbations and Their Influence on the Habitability of Circumstellar Planets

Frontiers in Astronomy and Space Sciences, 2021
In order to assess the habitability of planets in binary star systems, not only astrophysical considerations regarding stellar and atmospheric conditions are needed, but orbital dynamics and the architecture of the system also play an important role. Due
Elke Pilat-Lohinger, Ákos Bazsó
doaj   +1 more source

The harsh environment where exoplanets live

Astronomische Nachrichten, Volume 343, Issue 4, May 2022., 2022
Abstract The X‐ray and Extreme Ultraviolet (XUV) actvity of the Sun has determined important effects on the planets around it. In particular, high doses of X‐rays, flares, and coronal mass ejections (CMEs) combined with masses and sizes of the planets and the shielding action of the planetary magnetic fields have determined the diverse habitability of ...
Ignazio Pillitteri
wiley   +1 more source

X-Ray-luminous Supernovae: Threats to Terrestrial Biospheres

The Astrophysical Journal, 2023
The spectacular outbursts of energy associated with supernovae (SNe) have long motivated research into their potentially hazardous effects on Earth and analogous environments.
Ian R. Brunton, Connor O’Mahoney, Brian D. Fields, Adrian L. Melott, Brian C. Thomas   +4 more
doaj   +1 more source

Hot Jupiters: Origins, Structure, Atmospheres

Journal of Geophysical Research: Planets, Volume 126, Issue 3, March 2021., 2021
Abstract We provide a brief review of many aspects of the planetary physics of hot Jupiters. Our aim is to cover most of the major areas of current study while providing the reader with additional references for more detailed follow‐up. We first discuss giant planet formation and subsequent orbital evolution via disk‐driven torques or dynamical ...
Jonathan J. Fortney, Rebekah I. Dawson, Thaddeus D. Komacek   +2 more
wiley   +1 more source

Vertically Resolved Magma Ocean–Protoatmosphere Evolution: H2, H2O, CO2, CH4, CO, O2, and N2 as Primary Absorbers

Journal of Geophysical Research: Planets, Volume 126, Issue 2, February 2021., 2021
Abstract The earliest atmospheres of rocky planets originate from extensive volatile release during magma ocean epochs that occur during assembly of the planet. These establish the initial distribution of the major volatile elements between different chemical reservoirs that subsequently evolve via geological cycles.
Tim Lichtenberg, Dan J. Bower, Mark Hammond, Ryan Boukrouche, Patrick Sanan, Shang‐Min Tsai, Raymond T. Pierrehumbert   +6 more
wiley   +1 more source

Oceans, Lakes, and Stromatolites on Mars

Advances in Astronomy, Volume 2020, Issue 1, 2020., 2020
Billions of years ago, the Northern Hemisphere of Mars may have been covered by at least one ocean and thousands of lakes and rivers. These findings, based initially on telescopic observations and images by the Mariner and Viking missions, led investigators to hypothesize that stromatolite fashioning cyanobacteria may have proliferated in the surface ...
Rhawn G. Joseph, Olivier Planchon, N. S. Duxbury, K. Latif, G. J. Kidron, L. Consorti, R. A. Armstrong, C. Gibson, R. Schild, Michael Kueppers   +9 more
wiley   +1 more source

Evolution of galaxy habitability [PDF]

A&A 592, A96 (2016), 2016
We combine a semi-analytic model of galaxy evolution with constraints on circumstellar habitable zones and the distribution of terrestrial planets to probe the suitability of galaxies of different mass and type to host habitable planets, and how it evolves with time.
arxiv   +1 more source

The sustainability of habitability on terrestrial planets: Insights, questions, and needed measurements from Mars for understanding the evolution of Earth‐like worlds

Journal of Geophysical Research: Planets, Volume 121, Issue 10, Page 1927-1961, October 2016., 2016
Abstract What allows a planet to be both within a potentially habitable zone and sustain habitability over long geologic time? With the advent of exoplanetary astronomy and the ongoing discovery of terrestrial‐type planets around other stars, our own solar system becomes a key testing ground for ideas about what factors control planetary evolution ...
B. L. Ehlmann, F. S. Anderson, J. Andrews‐Hanna, D. C. Catling, P. R. Christensen, B. A. Cohen, C. D. Dressing, C. S. Edwards, L. T. Elkins‐Tanton, K. A. Farley, C. I. Fassett, W. W. Fischer, A. A. Fraeman, M. P. Golombek, V. E. Hamilton, A. G. Hayes, C. D. K. Herd, B. Horgan, R. Hu, B. M. Jakosky, J. R. Johnson, J. F. Kasting, L. Kerber, K. M. Kinch, E. S. Kite, H. A. Knutson, J. I. Lunine, P. R. Mahaffy, N. Mangold, F. M. McCubbin, J. F. Mustard, P. B. Niles, C. Quantin‐Nataf, M. S. Rice, K. M. Stack, D. J. Stevenson, S. T. Stewart, M. J. Toplis, T. Usui, B. P. Weiss, S. C. Werner, R. D. Wordsworth, J. J. Wray, R. A. Yingst, Y. L. Yung, K. J. Zahnle   +45 more
wiley   +1 more source