Results 41 to 50 of about 42,133 (278)

Confirmation of a Non‐Transiting Planet in the Habitable Zone of the Nearby M Dwarf L 98‐59

Astronomische Nachrichten, EarlyView.
ABSTRACT Only 40 exoplanetary systems with five or more planets are currently known. These systems are crucial for our understanding of planet formation and planet‐planet interaction. The M dwarf L 98‐59 has previously been found to show evidence of five planets, three of which are transiting.
Paul I. Schwarz, Stefan Dreizler, René Heller   +2 more
wiley   +1 more source

A Novel Metric for Assessing Climatological Surface Habitability

The Planetary Science Journal
Planetary surface habitability has so far been considered, in the main, on a global scale. The increasing number of 3D modelling studies of (exo)planetary climate has highlighted the need for a more nuanced understanding of surface habitability.
Hannah L. Woodward, Andrew J. Rushby, Nathan J. Mayne   +2 more
doaj   +1 more source

The habitability of the Universe through 13 billion years of cosmic time [PDF]

, 2016
The field of astrobiology has made tremendous progress in modelling galactic-scale habitable zones which offer a stable environment for life to form and evolve in complexity.
Cockell, Charles, Dayal, Pratika, Ward, Martin   +2 more
core   +1 more source

Tidal Limits to Planetary Habitability

, 2009
The habitable zones of main sequence stars have traditionally been defined as the range of orbits that intercept the appropriate amount of stellar flux to permit surface water on a planet. Terrestrial exoplanets discovered to orbit M stars in these zones,
Barnes, Barnes, Barnes, Brian Jackson, Butler, Davies, Dickey, Ferraz-Mello, Gaidos, Gounelle, Hut, Ikoma, Jackson, Jackson, Kuchner, Lammer, Mardling, Mayor, McEwen, Raymond, Raymond, Richard Greenberg, Rory Barnes, Sean N. Raymond, Segura, Spiegel, West, Winn, Yoder   +28 more
core   +2 more sources

Charge State Influence on Stability and Isomerism in Dehydrogenated PAHs: Insights from Anthracene, Acridine, and Phenazine

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
The ionization of anthracene, acridine, and phenazine has been explored, along with the removal of one and two hydrogen atoms, to provide valuable information for astrochemists and to understand the behavior of the resulting structures and their electronic reorganization. Abstract In this study, we systematically explored the stability and isomerism of
Khaldia Zghida, Farouk Hamza Reguig, Manuel Alcamí, Al Mokhtar Lamsabhi   +3 more
wiley   +1 more source

Degassing of CO2 triggers large-scale loss of helium from magma oceans

Communications Earth & Environment
The moon-forming impact caused widespread melting and vaporization of the proto-Earth, leading to the formation of a protolunar disk1,2. Volatile elements trapped in the inner parts of the disk condensed together with heavier elements into a global magma
Anne H. Davis, Razvan Caracas
doaj   +1 more source

The Microbial Community of a Terrestrial Anoxic Inter-Tidal Zone: A Model for Laboratory-Based Studies of Potentially Habitable Ancient Lacustrine Systems on Mars

Microorganisms, 2018
Evidence indicates that Gale crater on Mars harboured a fluvio-lacustrine environment that was subjected to physio-chemical variations such as changes in redox conditions and evaporation with salinity changes, over time.
Elliot Curtis-Harper, Victoria K. Pearson, Stephen Summers, John C. Bridges, Susanne P. Schwenzer, Karen Olsson-Francis   +5 more
doaj   +1 more source

The Carbonate Geochemistry of Enceladus' Ocean

Geophysical Research Letters, 2020
The plume composition at Enceladus contains clues about conditions and processes in the interior. We present new geochemical interpretations of Cassini mass spectrometry data from the plume gas and salt‐rich ice grains.
Christopher R. Glein, J. Hunter Waite
doaj   +1 more source

Prolonged Multi‐Phase Magmatism Due To Plume‐Lithosphere Interaction as Applied to the High Arctic Large Igneous Province

Geochemistry, Geophysics, Geosystems
The widespread High Arctic Large Igneous Province (HALIP) exhibits prolonged melting over more than 50 Myr, an observation that is difficult to reconcile with the classic view that large igneous provinces (LIPs) originate from melting in plume heads ...
Björn H. Heyn, Grace E. Shephard, Clinton P. Conrad   +2 more
doaj   +1 more source

Numerical analysis of air environment comfort in ship accommodation cabin

Zhongguo Jianchuan Yanjiu, 2018
[Objectives] This paper presents a numerical study of the air environment comfort in a four-person accommodation cabin of a ship in order to analyze the influence of different air supply schemes on the air environment.[Methods] The evaluating indicators ...
QI Haiqing, LI Zhiyin, ZHOU Lihua
doaj   +1 more source