Definition

A large group of stars, gas, and dust in space, which can contain billions of stars and other celestial objects.

Example

The Milky Way is the galaxy that contains our solar system.

Conversation

Have you ever looked up at the night sky and thought about how vast our galaxy is?

All the time! It's amazing to think there are billions of stars out there.

Yeah, and each star could have its own planets and systems in the galaxy.

Exactly! It makes you wonder if there’s life out there somewhere.

Synonyms & Antonyms

Root Explanation

Galaxy → It is derived from the Greek word "galaxias" (meaning milky), which comes from "gala" (meaning milk). The term originally referred to the Milky Way, which appears as a milky band of light in the night sky.

Memory Tip

Imagine the night sky filled with a 'milky' band of stars — that's why 'galaxy' refers to such a collection of stars.

Visually Confused Words