Question

Explain the earlier theories about origin of the earth???​

Answer 1

Answer:

The Hadean eon represents the time before a reliable (fossil) record of life; it began with the formation of the planet and ended 4.0 billion years ago. The following Archean and Proterozoic eons produced the beginnings of life on Earth and its earliest evolution.

Answer 2

Answer:

The theories related to the formation of the earth were the nebular hypothesis,Interstellar cloud theory, Hoyle's hypothesis and Protoplanet theory, along with the Capture theory

Explanation:

• The theory of nebular hypothesis was developed by Immanuel Kant and was widely accepted as a cloud and young sun and planets formed around it.

• The capture theory was put forward by the Michael mark in 1964 as the diffusion of a protostar. Which would, later on, have collapsed to for a planet.

• The interstellar cloud theory was given by the otto Schmidt, who stated that the sun which passed form a cloud of dust and gases eventually lead to the formation of the planets.

• Hoyle's theory shows how the mass and composition of the plants are in direct relationship with the supernova that formed the sun and the planets.

• The protoplanet theory states that the planets were formed by the collisions both the planet and the sun to form a cloud, where the smaller planet was captured by the gravity of the sun.
• States that the inner planets like the mercury venus and the mars were formed with moons and had similar rotational axis period as that of earth.