extragalactic

Thân thiện

An astronomer studies an extragalactic nebula through a powerful telescope.

Definition

1. Adjective: Located, occurring, or originating outside of or beyond a single galaxy, especially beyond our own Milky Way galaxy.

Usage

• General Use: Used primarily in astronomy and astrophysics to describe objects, phenomena, or measurements that are not part of our galaxy.
• Typical Contexts: Scientific papers, astronomy discussions, and educational materials about the universe.

Examples

• Adjective:
  • Astronomers study extragalactic objects like quasars and distant galaxy clusters.
  • The Hubble Space Telescope has provided stunning images of extragalactic nebulae.
  • Measuring extragalactic distances is a fundamental challenge in cosmology.

Advanced Usage

• "extragalactic astronomy": The branch of astronomy concerned with objects and phenomena outside the Milky Way.
  • She specialized in extragalactic astronomy, focusing on the evolution of distant galaxies.
• "extragalactic background light": The faint, diffuse light from all stars and galaxies outside our own.
  • Scientists measure the extragalactic background light to understand the history of star formation.

Variants and Related Words

• Extragalactically (adverb): In an extragalactic manner or context.
  • The signal was determined to originate extragalactically.
• Galactic (adjective): Relating to a galaxy, especially the Milky Way. (This is the contrasting term).
  • Our solar system is part of the galactic disk.

Synonyms

• Intergalactic: Existing or occurring between galaxies. (Note: While related, "intergalactic" often emphasizes the space galaxies, whereas "extragalactic" emphasizes origin or location a specific galaxy).
  • The probe traveled through intergalactic space.

Antonyms

• Galactic: Of or relating to a galaxy.
• Intragalactic: Located or occurring within a single galaxy.

Học thuật

Adjective

1. outside or beyond a galaxy
   • extragalactic nebula