20 papers · ranked by Valyu relevance
Tilman Spohn, Aki Roberge, M. J. Way, João C. Duarte + 4 more
This article reviews the emerging field of exo-geoscience, focusing on the geological and geophysical processes thought to influence the evolution and (eu)habitability of rocky exoplanets. We examine the possible roles of planetary interiors, tectonic regimes, continental coverage, volatile cycling, magnetic fields…
Diego Turrini, Claudio Codella, Camilla Danielski, Davide Fedele + 21 more
'Sergio Fonte' 'Antonio Garufi' 'Mario Giuseppe Guarcello' 'Ravit Helled' 'Masahiro Ikoma' 'Mihkel Kama' 'Tadahiro Kimura' 'J. M. Diederik Kruijssen' 'Jesus Maldonado' 'Yamila Miguel' 'Sergio Molinari' 'Athanasia Nikolaou' 'Fabrizio Oliva' 'Olja Panić' 'Marco Pignatari' 'Linda Podio' 'Hans Rickman' 'Eugenio Schisano'…
William F McDonough
One in every two atoms in the Earth, Mars, and the Moon is oxygen; it is the third most abundant element in the solar system. The oxygen isotopic compositions of the terrestrial planets are different from those of the Sun and demonstrate that these planets are not direct compositional analogs of the solar photosphere.…
F. van der Tak
perspective Authors: ['F. van der Tak'] Abstract As of 2023, over 5500 planets are known to orbit stars other than our Sun. We can measure their sizes and orbital periods, infer their masses and temperatures, and constrain their compositions. Based on these data, about 1% of extrasolar planets are potentially habitable…
Philipp Baumeister, Francesca Miozzi, Claire Marie Guimond, Marie-Luise Steinmeyer + 6 more
Most our knowledge about rocky exoplanets is based on their measure of mass and radius. These two parameters are routinely measured and are used to categorise different populations of observed exoplanets. They are also tightly linked to the planet’s properties, in particular those of the interior. As such they offer…
D. Turrini
The great diversity of the thousands of planets known to date is proof of the multitude of ways in which formation and evolution processes can shape the life of planetary systems. Multiple formation and evolution paths, however, can result in the same planetary architecture. Because of this, unveiling the individual…
R. B. Firestone
Three major planets, Venus, Earth, and Mercury formed out of the solar nebula. A fourth planetesimal, Theia, also formed near Earth where it collided in a giant impact, rebounding as the planet Mars. During this impact Earth lost ≈4% of its crust and mantle that is now is found on Mars and the Moon. At the antipode of…
Diana Valencia, Amaya Moro-Martin, Johanna Teske
Physics Department, University of Toronto, Toronto, ON, M1C 1A4, Canada Observatoire de la Cote d'Azur, Boulevard de l'Observatoire, Nice, 06300, France Space Telescope Science Institute, 3700 San Mart´ın Dr., Baltimore, MD 21218, USA William H. Miller III Department of Physics and Astronomy, Johns Hopkins University…
Jorge A. Sanchez, Peter C. B. Smith, Krishna Kanumalla, Luis Welbanks + 16 more
The elemental compositions of exoplanets encode information about their formation environments and internal structures. While volatile ratios such as carbon-to-oxygen (C/O) are used to trace formation location, the rock-forming elements-magnesium (Mg), silicon (Si), and iron (Fe)-govern interior mineralogy and are…
Isaac J. Onyett, Martin Schiller, Georgy V. Makhatadze, Zhengbin Deng + 2 more
'Zhengbin Deng' 'Anders Johansen' 'Martin Bizzarro'] Understanding the nature and origin of the precursor material to terrestrial planets is key to deciphering the mechanisms and timescales of planet formation1. Nucleosynthetic variability among rocky Solar System bodies can trace the composition of planetary building…
Alexander B. Verchovsky, Feargus A. J. Abernethy, Mahesh Anand, Ian A. Franchi + 31 more
'Ian A. Franchi' 'Monica M. Grady' 'Richard C. Greenwood' 'Simeon J. Barber' 'Martin Suttle' 'Motoo Ito' 'Naotaka Tomioka' 'Masayuki Uesugi' 'Akira Yamaguchi' 'Makoto Kimura' 'Naoya Imae' 'Naoki Shirai' 'Takuji Ohigashi' 'Ming-Chang Liu' 'Kentaro Uesugi' 'Aiko Nakato' 'Kasumi Yogata' 'Hayato Yuzawa' 'Yuzuru Karouji'…
Keith Putirka
Mineral properties hold dominion over planetary behavior as their physical and thermal properties control mantle circulation, plate tectonics, melting behavior, and crustal deformation, as well as global water and CO2 cycles. Estimating exoplanet mineralogy is thus of paramount importance for understanding planetary…
Marie-Luise Steinmeyer, Lena Noack, Philipp Baumeister, Keiko Hamano + 8 more
The atmospheric composition of rocky exoplanets offers an important tool for constraining the properties of the interior of this type of planet, beyond what is possible from measurements of their mass and radius alone. However, the interpretation of these observations requires an understanding of the complex interplay…
Daniel Muratore, Sara I. Walker, Heather Graham, Christopher H. House + 1 more
Recent analysis of data from the Cassini Cosmic Dust Analyzer confirm geochemical modeling work that shows that the ocean of Enceladus contains considerable quantities of inorganic phosphorus as well as ammonium [55]. Technological advancement in flight instrumentation will continue to yield increasingly detailed data…
Tsubasa Sato, Ko Abe, Jun Koseki, Mayumi Seto + 7 more
Establishing a sustainable life-support system for space exploration is challenging due to the vast distances, costs, and differing environments from Earth. Using insights from the Biosphere 2 experiment, we introduced the “Ecosphere” and “Biosealed” systems in custom containers to replicate Earth’s ecosystems…
Authors not listed
In the Earth system, Phosphorus (P) does not form a single phase, but mostly combines into compounds forming multiple minerals. Phosphate (P+5) is the majority P species in the Earth’s crust. Phosphate is the completely oxidized P species, while P similarly contains some other reduced species like hypophosphate (P4+)…
Aoi Murakami, Yu Komatsu, Kenji Takizawa
The vegetation red-edge of terrestrial plants is a key biosignature for detecting Earth-like habitable exoplanets. Although water is essential for plants, an excess of water can limit the distribution of terrestrial vegetation. On planets with extensive water coverage and limited land, floating vegetation on the…
Miguel Arribas Tiemblo, Alicia Rodríguez-Moreno, Felipe Gómez, Ester Lázaro
Viruses are among the simplest biological entities capable of replication. Their robustness and adaptability make them relevant not only to terrestrial ecosystems but also to astrobiological exploration. As durable entities, they may persist in environments far harsher than those tolerable to cellular life and are…
Authors not listed
Considering the harsh surface conditions on Mars, terrestrial organisms that can survive and remain detectable after exposure to similar conditions provide invaluable models for guiding current and future search-for-life missions. To this end, we evaluated the extremophilic archaeon Acidianus manzaensis grown on…
Holly R. Rucker, Tucker D. Ely, Douglas E. LaRowe, Donato Giovannelli + 1 more
Putative alkaline hydrothermal systems on Noachian Mars were potentially habitable environments for microorganisms. However, the types of reactions that could have fueled microbial life in such systems and the amount of energy available from them have not been quantitatively constrained. In this study, we use…