Definition

Noun: 1. A cloud of interstellar gas and dust: A "gaseous nebula" is a vast, diffuse cloud in space, primarily composed of gas (like hydrogen and helium) and dust. It is often the site where new stars are born or where dying stars expel their material. 2. A visible celestial object: It refers to a specific, often luminous, astronomical structure that can sometimes be observed with telescopes.

Usage Examples

• Noun:
  • The Orion Nebula is a famous gaseous nebula where new stars are forming.
  • Astronomers study the composition of a gaseous nebula to understand the life cycle of stars.
  • Through the telescope, the gaseous nebula appeared as a faint, glowing cloud.

Advanced Usage

• "Emission nebula": A type of gaseous nebula that glows because its gas is ionized by nearby hot stars.
  • The red color of many gaseous nebulae is characteristic of an emission nebula.
• "Planetary nebula": A shell of gas ejected from a dying, low-mass star, a specific phase in the life of a gaseous nebula.
  • The Ring Nebula is a beautiful example of a planetary nebula, a late stage of a gaseous nebula.

Variants and Related Words

• Nebula (n): The more general term; a "gaseous nebula" is a specific type of nebula primarily made of gas and dust.
• Dark nebula (n): A dense cloud of gas and dust that obscures the light from objects behind it, contrasting with a luminous gaseous nebula.
• Supernova remnant (n): The expanding cloud of debris from a stellar explosion, which becomes a type of gaseous nebula.

Synonyms

• Interstellar cloud: A general term for accumulations of matter in space.
• Nebulosity: The quality or state of being nebular; diffuse cloud-like matter in space.

Related Phrases

• N/A: The term "gaseous nebula" itself is a specific noun phrase and is not commonly used in phrasal verb constructions.

Related Idioms

• N/A: There are no common idioms that use the specific term "gaseous nebula."

Noun

1. a cluster of stars within an intricate cloud of gas and dust