heliocentric
Pronunciation: [ˌhiːliəʊˈsɛntrɪk]
Word
Context: "astronomy"
(adjective) describing a model of the universe where the Sun is at the center, and all the planets, including Earth, move around it. Just like how Earth moves around the Sun, the heliocentric model shows that the Sun is the main star in our solar system.
Example
The heliocentric theory explains how the planets orbit the Sun each year.
Example
Before the heliocentric model, many people believed that the Earth was the center of the universe.
Example
What did the heliocentric model change about how we understand our solar system?
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