Αποτελέσματα Αναζήτησης
12 Απρ 2023 · These observations show that planet-forming disks around young stars comprise roughly 99% hydrogen and helium gas, with dust containing other elements, such as silicon, carbon and oxygen,...
- Experimental evidence for hydrogen incorporation into Earth’s core
Hydrogen is one of the possible alloying elements in the...
- Experimental evidence for hydrogen incorporation into Earth’s core
11 Μαΐ 2021 · Hydrogen is one of the possible alloying elements in the Earth’s core, but its siderophile (iron-loving) nature is debated. Here we experimentally examined the partitioning of hydrogen...
12 Απρ 2023 · Here we use a self-consistent thermodynamic model to show that Earth’s water, core density and overall oxidation state can all be sourced to equilibrium between hydrogen-rich primary...
19 Οκτ 2023 · Earth’s early atmosphere was most likely composed of hydrogen and helium. As the planet changed, and the crust began to form, volcanic eruptions occurred frequently. These volcanoes pumped water vapor, ammonia, and carbon dioxide into the atmosphere around Earth.
10 Ιουν 2024 · We know that the Big Bang made hydrogen, helium, and lithium, but where did the rest of the elements come from? The answer is that the other elements were made by stars. The heat and pressure within stars cause smaller atoms to smash together and fuse into new, larger atoms.
28 Μαρ 2022 · Geochemical evidence indicates the Earth has deep reservoirs of helium-3, but their locations and abundances remain uncertain. Our models of volatile exchange during Earth's formation and evolution implicate the metallic core as a leaky reservoir that supplies the rest of the Earth with helium-3.
19 Μαρ 2022 · A new theory suggests that high-magnesium pyroxenites and a wet, heterogeneous mantle helped Earth quickly become habitable during the Hadean eon by efficiently sequestering atmospheric carbon. Earth formed from the Sun’s protoplanetary disk about 4.6 billion years ago. In the beginning, it was a
