Results 41 to 50 of about 464 (180)
A Link between Rocky Planet Density and Host Star Chemistry
The Astronomical JournalPlanets and their host stars form from the same cloud of gas and dust, so we assume that their chemical compositions are linked. However, a clear correlation between rocky planet interior properties and host star chemistry remains elusive for planets ...
Aida Behmard +4 more
doaj +1 more source
Perspectives of Earth and Space Scientists, Volume 5, Issue 1, December 2024.Abstract Standard notions of an “Earthlike” planet rely solely on physical and material properties, like planetary mass, radius, and surface temperature. Here, we introduce a novel, relational perspective on what defines “Earthlikeness.” In our process‐based framework, rocky planets are local pockets of free energy that have the potential to drive the ...
Michael L. Wong +4 more
wiley +1 more source
The Planetary Science JournalUsing mass–radius composition models, small planets ( R ≲ 2 R _⊕ ) are typically classified into three types: iron-rich, nominally Earth-like, and those with solid/liquid water and/or atmosphere.
J. G. Schulze +6 more
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Chemistry – A European Journal, Volume 30, Issue 57, October 11, 2024.This study investigates the ability of the carbonaceous meteorite CV3 Allende to act as a catalyst in electrochemical interactions, triggering electrocatalytic reactions resulting in nitrogen (N2) fixation and conversion to ammonia. Additionally, the evolution of crucial compounds such as H2, CN− and sulfur/H2S was observed, along with the detection of
Lucas Fernandez +3 more
wiley +1 more source
The Astrophysical Journal Supplement Series, 2023 Characterizing the interiors of rocky exoplanets is important to understand planetary populations and further investigate planetary habitability. New observable constraints and inference techniques have been explored for this purpose.
Yong Zhao, Dongdong Ni, Zibo Liu
doaj +1 more source
Meteoritics &Planetary Science, Volume 59, Issue 9, Page 2241-2259, September 2024.Abstract We analyzed the methanol extracts of six pristine specimens of the Tagish Lake meteorite (TL1, TL4, TL5A, TL6, TL7, and TL10a) and heated and unheated samples of Allende using high‐performance liquid chromatography coupled with high‐resolution, accurate mass–mass spectrometry (HPLC‐HRAM‐MS).
N. Randazzo +5 more
wiley +1 more source
The Astrophysical JournalNontransiting terrestrial planets will be accessible by upcoming observatories of which LIFE is an example. Planet b orbiting Teegarden’s Star is one of the optimal targets for such missions.
Ryan Boukrouche +2 more
doaj +1 more source
Near the Runaway: The Climate and Habitability of Teegarden’s Star b
The Astrophysical Journal LettersTeegarden’s Star b, a nearby terrestrial world receiving an Earth-like instellation, is a prime candidate for next-generation observatories targeting temperate exoplanets in their habitable zones.
Ryan Boukrouche +2 more
doaj +1 more source
Knudsen effusion mass spectrometry: Current and future approaches
Rapid Communications in Mass Spectrometry, Volume 38, Issue 14, 30 July 2024.Rationale Knudsen effusion mass spectrometry (KEMS) has been a powerful tool in physical chemistry since 1954. There are many excellent reviews of the basic principles of KEMS in the literature. In this review, we focus on the current status and potential growth areas for this instrumental technique.
Nathan S. Jacobson +4 more
wiley +1 more source
A water budget dichotomy of rocky protoplanets from ²⁶Al-heating [PDF]
, 2019 In contrast to the water-poor inner solar system planets, stochasticity during planetary formation (Alibert & Benz 2017; Raymond& Izidoro 2017) and order of magnitude deviations in exoplanet volatile contents (Kaltenegger 2017) suggest ...
Burn, Remo +8 more
core +1 more source