Nebulae are clouds of gas and dust.

Meaning: Nebulae are vast clouds of gas and dust that exist in space.

Choice of Words: Nebulae are vast clouds of gas and dust in space. Are indicates a state of being or existence. Clouds are visible masses of tiny water droplets or ice crystals suspended in the atmosphere. Gas refers to a substance that has no definite shape or volume. Dust refers to fine, dry particles of matter.

Alternative Expressions

Nebulae are like clouds in space.

Meaning: This sentence compares nebulae to clouds. Nebulae are like clouds, but they are found in space instead of in the sky.

Choice of Words: Nebulae is a scientific term for clouds of gas and dust found in space. Clouds are collections of tiny water droplets or ice crystals that float in the sky. Space is the vast emptiness that surrounds the Earth and other planets.

Nebulae are clouds of stuff that floats in space.

Meaning: This sentence describes what nebulae are made of and where they are found. Nebulae are clouds of stuff that floats in space.

Choice of Words: Nebulae is a scientific term for clouds of gas and dust found in space. Clouds are collections of tiny water droplets or ice crystals that float in the sky. Stuff is a general term for anything that has a physical presence. Space is the vast emptiness that surrounds the Earth and other planets.

Related Expressions