Words 1
The study of the universe.
Astronomy
The belief the Sun is in the center of the solar system.
heliocentric
Galaxies with round arms
spiral galaxies
Belief the Earth is the center of the universe.
geocentric
The path a body takes around a larger object.
orbit
The Core, Radiative zone, Conective zone, Photosphere, Cromophere, Corona.
The layers of the sun.
A space rock
What are meteoroids?