Hi guys, i'm not sure if this topic fits here, but can anyone tell me about the origin of planets? Like how is our planet formed?
I'm not the best person for this stuff but I'll take a stab at it anyways. I'm pretty sure this is the mainstream account of planet formation.Hi guys, i'm not sure if this topic fits here, but can anyone tell me about the origin of planets? Like how is our planet formed?
Ah, no. They condensed from gas phase wherever it was cold enough onto the already solid dust. Most of the condensation happened in the pre-solar nebula. Once the sun began forming a central mass, the nebula dust/ice collapsed into its rotational plane, then began forming clumps under the influence of the ambient gas and its own gravity. Between the size-range of dust and planetoids there's a lot of unknowns, but basically the cores of the gas giants formed objects much like gigantic, icy versions of Earth, then their gravity pulled in a lot of additional gas from the nebula. This happened pretty quickly for Jupiter and Saturn, but not quick enough for Uranus and Neptune, since they're only a small fraction hydrogen/helium.The elements that make up the icy outer planets would evaporate under the heat of the sun and therefore can't make solid planets. These were instead transported outwards by various mechanisms.
More or less what I said. But without any "ejection". The Sun began "ejecting" a very heavy solar-wind in its T-Tauri phase, which blew away the Hydrogen/Helium gas, but this happened after the cores of the gas giants had formed.The distance at which the temperature is low enough for the ejected material to condensate[sic] is called the "frost line" and coincides, not accidentally, with Jupiter's orbit. Once they condensate[sic] they will start to lump together and form planets.