GED Science Practice 2025 - Free GED Science Practice Questions and Study Guide

A constellation in astronomy refers to a group of stars that are perceived to form a recognizable pattern or shape in the night sky. These patterns often have historical or mythological significance and have been used for navigation, storytelling, and various cultural traditions throughout human history. The stars in a constellation may not be physically related or close together in space; instead, they appear to be grouped from our viewpoint on Earth.

The other options presented do not accurately describe what a constellation is. For instance, the second option pertains to geological formations rather than celestial bodies. The third option relates to electrical devices, and the fourth describes chemical compounds, neither of which connects with the fundamental concept of constellations in the field of astronomy. Thus, the definition of a constellation being a specific grouping of stars is the correct comprehension of the term within the scientific context.