How do secondary iron enrichments form within basaltic eucrites? An experimental approach

How Do Galaxies Form?

It is currently believed that galaxies were assembled via chaotic hierarchical mergers between massive cold dark matter halos, in which baryonic star forming matter was embedded. One would therefore expect the properties of individual galaxies to be determined by numerous independent factors such as star forming history, merger history, mass, angular momentum, size and environment. It is theref...

How do brown dwarves form?

We review and evaluate four mechanisms for forming brown dwarves: (i) dynamical ejection of a stellar embryo from its placental prestellar core; (ii) opacity-limited fragmentation of a shock-compressed layer; (iii) gravitational instabilities in discs, triggered by impulsive interactions with other discs or naked stars; and (iv) photo-erosion of pre-existing cores. All these mechanisms can prod...

How Do Atmospheric Rivers Form?

Permeability within Basaltic Oceanic Crust

Water-rock interactions within the seafloor are responsible for significant energy and solute fluxes between basaltic oceanic crust and the overlying ocean. Permeability is the primary hydrologic property controlling the form, intensity, and duration of seafloor fluid circulation, but after several decades of characterizing shallow oceanic basement, we are still learning how permeability is cre...

Vesicular Eucrites: Where and How Did They Form and Why Are They so Rare?

T.J. McCoy, L. Wilson, G.K. Benedix, R.A. Ketcham, M. Wadhwa and A.M. Davis Dept. of Mineral Sciences, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560-0119 USA ([email protected]), Environmental Sci. Dept., Inst. of Environmental and Biological Sci., Lancaster Univ., Lancaster LA1 4YQ UK Washington University, St. Louis, MO 63130-4899 USA Dept. of Geologica...