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lexiccal lesson
| Term | Definition |
|---|---|
| galaxy | a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction. |
| planet | a celestial body distinguished from the fixed stars by having an apparent motion of its own (including the moon and sun), especially with reference to its supposed influence on people and events. |
| astrology | the study of the movements and relative positions of celestial bodies interpreted as having an influence on human affairs and the natural world. |
| astronomy | the branch of science which deals with celestial objects, space, and the physical universe as a whole. |