Which astronomical model describes Earth as the center of the universe?

• A. Geocentric model
• B. Heliocentric model
• C. Planets farthest from the Sun
• D. Rotation

Answer: (A)

The idea that Earth is at the center of everything describes the geocentric model. In this view, Earth stays fixed at the center and the Sun, Moon, and planets orbit around it. It matched everyday observations for a long time and was elaborated with mechanisms like epicycles to explain why planets sometimes seemed to backtrack in the sky. The heliocentric model, by contrast, puts the Sun at the center and explains planetary motions more simply and accurately. The other options aren’t about a cosmic arrangement: rotation refers to turning on Earth’s axis, not a model of the universe, and a statement about planets far from the Sun isn’t a model at all.