Question

briefly answer all of the questions in one sentense

Briefly describe the history of the nebular hypothesis and the close encounters hypothesis. Why did the nebular hypothesis win out and become a theory? What was the initial composition of the Solar Nebula? From where did the heavier elements come? Describe the process of the collapse of the Solar Nebula. What caused the nebula to heat up, spin faster, and flatten? What pieces of evidence exist to support the Solar Nebula hypothesis? Why are there two major types of planets? How did planets condense into seeds and then accrete into planetesimals from the Solar Nebula? What is the frost line? Why are meteorites important for verifying theories of the conditions of the early Solar System? Of what is the Solar Nebula made, and how did it clear the Solar Nebula? How were the minor bodies (the asteroid belt and Kuiper belt) created? What are the exceptions to the rules of the Solar System? How does a successful model of the Solar System’s formation allow for them? How do we think the Moon was created? How do we know the age of the Solar System? Relatedly, how does radiometric dating work? What other methods of age determination support the validity of radiometric dating? What is the source of the oldest rocks in the Solar System? Why do we think the collapse of the Solar Nebula was caused by a supernova in particular?

Answer 1

1. The nebular hypothesis is a model to explain the formation and evolution of the Solar System. It suggests that the Solar System is formed by giant interstellar cloud of dust which is called nebulous material.

2. Nebular hypothesis win out and become a theory due to the observations of the same process currently happening elsewhere in our Galaxy. Giant cloud of dust gives birth to new stars or solar system.

3. Initial composition of solar nebula was giant interstellar cloud of dust. Hydrogen is thought to be 74 % and Helium 24 %. Other are heavier element.

4. Helium to iron is formed inside the core of big stars by nuclear fusion process. Other heavy element formed in the event of supernova.