Results 11 to 20 of about 244,858 (188)
Origin and evolution of Mercury's circumsolar dust ring [PDF]
arXiv, 2023 A circumsolar dust ring has been recently discovered close to the orbit of Mercury. There are currently no hypotheses for the origin of this ring in the literature, so we explore four different origin scenarios here: the dust originated from (1) the sporadic meteoroid complex that comprises the major portion of the Zodiacal Cloud, (2) recent asteroidal/
arxiv
Hypothetical hyperbolic encounters between Venus and proto-Mercury that partially \ stripped away proto-Mercury's mantle [PDF]
, 2019 Mercury has an unusually large metal core comprising ~70% of its mass comparing to all other terrestrial planets in the solar system. Giant impacts can remove a significant fraction of the silicate mantle of a chondritic proto-Mercury and form the iron rich present-day Mercury.
arxiv +1 more source
Modification of the composition and density of Mercury from late accretion [PDF]
, 2020 Late accretion is a process that strongly modulated surface geomorphic and geochemical features of Mercury. Yet, the fate of the impactors and their effects on Mercury's surface through the bombardment epoch are not clear. Using Monte-Carlo and analytical approaches of cratering impacts, we investigate the physical and thermodynamical outcomes of late ...
arxiv +1 more source
On the oscillations in Mercury's obliquity [PDF]
Icarus 192 (2007) 308-317, 2007 One major objective of MESSENGER and BepiColombo spatial missions is to accurately measure Mercury's rotation and its obliquity in order to obtain constraints on internal structure of the planet. Which is the obliquity's dynamical behavior deriving from a complete spin-orbit motion of Mercury simultaneously integrated with planetary interactions?
arxiv +1 more source
The Elusive Origin of Mercury [PDF]
, 2017 The MESSENGER mission sought to discover what physical processes determined Mercury's high metal to silicate ratio. Instead, the mission has discovered multiple anomalous characteristics about our innermost planet. The lack of FeO and the reduced oxidation state of Mercury's crust and mantle are more extreme than nearly all other known materials in the
arxiv +1 more source
Journal of the American Medical Association, 1888 Dear Sir: —InThe Journal, Jan. 21, page 95, column "Book Reviews," and in commendation of " 600 Medical Don'ts," the review says: "To the other 'don'ts ' might be added: Don't imagine that mercury can get into your bones," etc. What then shall we do with authority so high and so generally accepted as Bartholow? In his "Materia Medica," fifth edition,
Joseph Jones, Inquirer
openaire +2 more sources
A comprehensive model of the meteoroid environment around Mercury [PDF]
, 2018 To characterize the meteoroid environment around Mercury and its contribution to the planet's exosphere, we combined four distinctive sources of meteoroids in the solar system: main-belt asteroids, Jupiter family comets, Halley-type comets, and Oort Cloud comets. All meteoroid populations are described by currently available dynamical models. We used a
arxiv +1 more source
Librations and Obliquity of Mercury from the BepiColombo radio-science and camera experiments [PDF]
, 2011 A major goal of the BepiColombo mission to Mercury is the determination of the structure and state of Mercury's interior. Here the BepiColombo rotation experiment has been simulated in order to assess the ability to attain the mission goals and to help lay out a series of constraints on the experiment's possible progress.
arxiv +1 more source
Terrestrial Planet Formation: Constraining the Formation of Mercury [PDF]
, 2017 The formation of the four terrestrial planets of the solar system is one of the most fundamental problems in the planetary sciences. However, the formation of Mercury remains poorly understood. We investigated terrestrial planet formation by performing 110 high-resolution N-body simulation runs using more than 100 embryos and 6000 disk planetesimals ...
arxiv +1 more source
Mercury's Protoplanetary Mass [PDF]
arXiv, 2004 Major element fractionation among chondrites has been discussed for decades as ratios relative to Si or Mg. Recently, by expressing ratios relative to Fe, I discovered a new relationship admitting the possibility that ordinary chondrite meteorites are derived from two components, a relatively oxidized and undifferentiated, primitive component and a ...
arxiv