Results 11 to 20 of about 458,695 (311)

Large Igneous Province Record Through Time and Implications for Secular Environmental Changes and Geological Time‐Scale Boundaries

open access: yesGeophysical Monograph Series, Page 1-26., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst   +8 more
wiley  

+10 more sources

Chromium on Mercury: New Results From the MESSENGER X‐Ray Spectrometer and Implications for the Innermost Planet's Geochemical Evolution [PDF]

open access: yesJournal of Geophysical Research: Planets, 2023
Mercury, the innermost planet, formed under highly reduced conditions, based mainly on surface Fe, S, and Si abundances determined from MESSENGER mission data.
L. Nittler   +8 more
semanticscholar   +1 more source

Solar-wind electron precipitation on weakly magnetized bodies: The planet Mercury [PDF]

open access: yesAstronomy & Astrophysics, 2022
Mercury is the archetype of a weakly magnetized, airless, telluric body immersed in the solar wind. Due to the lack of any substantial atmosphere, the solar wind directly precipitates on Mercury's surface.
F. Lavorenti   +6 more
semanticscholar   +1 more source

Extreme close encounters between proto-Mercury and proto-Venus in terrestrial planet formation [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2020
Modern models of terrestrial planet formation require solids depletion interior to 0.5–0.7 au in the planetesimal disc to explain the small mass of Mercury.
T. Fang, Hongping Deng
semanticscholar   +1 more source

Maps of Solar Wind Plasma Precipitation onto Mercury’s Surface: A Geographical Perspective [PDF]

open access: yesThe Planetary Science Journal, 2023
Mercury is the closest planet to the Sun, possesses a weak intrinsic magnetic field, and has only a very tenuous atmosphere (exosphere). These three conditions result in a direct coupling between the plasma emitted from the Sun (namely, the solar wind ...
F. Lavorenti   +9 more
semanticscholar   +1 more source

Nucleation and growth of iron pebbles explains the formation of iron-rich planets akin to Mercury [PDF]

open access: yesAstronomy & Astrophysics, 2022
The pathway to forming the iron-rich planet Mercury remains mysterious. Mercury's core makes up 70% of the planetary mass, which implies a significant enrichment of iron relative to silicates, while its mantle is strongly depleted in oxidized iron.
A. Johansen, C. Dorn
semanticscholar   +1 more source

Exogenous delivery of water to Mercury [PDF]

open access: yesIcarus (New York, N.Y. 1962), 2022
Radar and in-situ observations of the bright and dark polar deposits in permanently shadowed north-polar regions of Mercury indicate that these regions contain water ice despite the planet's proximity to the Sun.
K. Frantseva   +5 more
semanticscholar   +1 more source

Terrestrial Planet Formation: Constraining the Formation of Mercury [PDF]

open access: yes, 2017
How the four terrestrial planets of the solar system formed is one of the most fundamental questions in the planetary sciences. Particularly, the formation of Mercury remains poorly understood.
P. S. Lykawka, Takashi 藤孝士 Ito 伊
semanticscholar   +1 more source

Review of Mercury’s dynamic magnetosphere: Post-MESSENGER era and comparative magnetospheres [PDF]

open access: yesScience China. Earth Sciences, 2021
This review paper summarizes the research of Mercury’s magnetosphere in the Post-MESSENGER era and compares its dynamics to those in other planetary magnetospheres, especially to those in Earth’s magnetosphere.
Weijie Sun   +7 more
semanticscholar   +1 more source

Widespread small grabens consistent with recent tectonism on Mercury

open access: yesNature Geoscience, 2023
Since Mariner 10 first imaged Mercury in 1974, tectonic landforms dominated by shortening structures have been extensively documented. Contractional tectonism on Mercury is thought to have begun early in the planet’s history and is theorized to have ...
B. Man   +4 more
semanticscholar   +1 more source

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