Historical models of the solar system include: A.Helliocentric,B.nebular,C.Geocentric model or earth centered universe and a _ model or sun centered universe

The answer is geocentric and helliocentric. If C says that, then C is right. Of course, my definition of Historical could be well different than your teacher.

The missing model is:

C. Geocentric model or earth-centered universe

Historical models of the solar system include:

A. Heliocentric

B. Nebular

C. Geocentric model or earth-centered universe

D. Sun-centered universe

The missing option is "C. Geocentric model or earth-centered universe."

To explain the historical models of the solar system, we need to understand the two main models that were proposed and how they differ.

1. Geocentric Model: The Geocentric Model of the solar system, also known as the Earth-centered model, was widely accepted for centuries. It proposed that Earth remained at the center of the universe, and celestial bodies, including the Sun, Moon, planets, and stars, revolved around it. This model was supported by ancient Greek astronomers like Ptolemy.

2. Heliocentric Model: The Heliocentric Model of the solar system, also known as the Sun-centered model, was proposed by Nicolaus Copernicus in the 16th century. This model suggests that the Sun is at the center of the solar system, and the planets, including Earth, revolve around it. This model was later supported by further evidence and observations by astronomers like Johannes Kepler and Galileo Galilei.

The missing option is "B. Nebular model." However, the nebular model is not specifically a model of the solar system, but rather a model of how solar systems themselves form. The nebular model proposes that a rotating, collapsing cloud of gas and dust, called a nebula, is responsible for the formation of solar systems. This model explains the formation of the Sun and planets from a primordial cloud.

In summary, the historical models of the solar system include the Geocentric Model (Earth-centered), the Heliocentric Model (Sun-centered), and the Nebular Model (explains the formation of solar systems).