the solar system
The protoplanet hypothesis originated from the need to explain the formation of planets in a systematic way, based on observations of protoplanetary disks around young stars. It suggests that dust and gas in these disks coalesce through processes like accretion and gravitational attraction, leading to the formation of larger bodies, or protoplanets. This hypothesis is supported by the laws of physics, including gravity and conservation of angular momentum, and aligns with the observed structure of our solar system and others. Ultimately, it provides a coherent framework for understanding the transition from dust clouds to planetary systems.
An early collision by (proto) Earth with a large protoplanet..
The protoplanet theory, which explains the formation of planets from a rotating disk of gas and dust surrounding a young star, was developed through the contributions of several scientists. Key figures include the physicist Carl Friedrich von Weizsäcker and later improvements by others such as Steven J. Desch. This theory evolved from earlier models of planetary formation and has been refined through observations and simulations of protoplanetary disks.
The primary sources of heat for protoplanets during their formation were gravitational collapse, radioactive decay of elements within the planet, and impacts from other celestial bodies. These heat sources contributed to melting the protoplanet's interior and driving geological processes like differentiation and magma ocean formation.
The protoplanet underwent differentiation, where heat caused materials to separate based on their density. The heavy elements sank to the core, while lighter materials floated to the surface, forming layers. This process is important in planetary formation as it leads to the creation of distinct layers within a planet.
I think you mean "protoplanet hypothesis". In fact, astronomers usually call it the Nebular Hypothesis A protoplanet is a planet-like object that hasn't fully developed into a planet. Why that hypothesis? It's because it is the best we have to describe the origin of the solar system according to the Laws of Physics.
The hypothesis states that during the formation of a star, the original nebula disk may be so massive that upon further contraction and flattening, it breaks into separate clouds (vortices) or protoplanets.
The hypothesis states that during the formation of a star, the original nebula disk may be so massive that upon further contraction and flattening, it breaks into separate clouds (vortices) or protoplanets.
The protoplanet hypothesis originated from the need to explain the formation of planets in a systematic way, based on observations of protoplanetary disks around young stars. It suggests that dust and gas in these disks coalesce through processes like accretion and gravitational attraction, leading to the formation of larger bodies, or protoplanets. This hypothesis is supported by the laws of physics, including gravity and conservation of angular momentum, and aligns with the observed structure of our solar system and others. Ultimately, it provides a coherent framework for understanding the transition from dust clouds to planetary systems.
An early collision by (proto) Earth with a large protoplanet..
No one was around at the time, so we're not really sure, but the current hypothesis in favor is called the "Giant Impact Hypothesis." It posits that a protoplanet about the same size as the current planet Mars struck the proto-Earth while it was still forming, and "splashed" a lot of rock off. This eventually formed the Moon, while the rest of this protoplanet (named Theia) joined with the Earth.
Hypothesis
describe three possible ways in which a hypothesis may rise?
It depends entirely on what the hypothesis is.
the big bang
The protoplanet theory, which explains the formation of planets from a rotating disk of gas and dust surrounding a young star, was developed through the contributions of several scientists. Key figures include the physicist Carl Friedrich von Weizsäcker and later improvements by others such as Steven J. Desch. This theory evolved from earlier models of planetary formation and has been refined through observations and simulations of protoplanetary disks.
A testable answer to a scientific question