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Glite Dictionary
extragalactic

extragalactic

1 9.9
Located outside our galaxy the Milky Way
  • adjective
  • /ˌɛkstrəˈɡəˈlæktɪk/
  • Specialized
translation icon : extragaláctico
  • Many astronomers, of course, have continued in the tradition of greatly underestimating the errors in the extragalactic distance estimates.
  • extragalactic astronomy
  • extragalactic cosmic rays
  • extragalactic radio sources

Examples

  • The isotropic component is the extragalactic gamma-ray background.

    Academic text (2012)

  • Because Cepheids are extremely luminous stars that can be seen across millions of light-years, they are ideal standard candles for measuring extragalactic distances.

    Academic text (2002)

  • All of the currently visible extragalactic radio sources will no longer be synchrotron-visible after a few hundred million years.

    Academic text (2002)

  • Further, if an object is extragalactic, students determine a distance to the object by measuring its redshift.

    Academic text (2005)

  • Many extragalactic radio sources, such as active galactic nuclei, have steep radio spectra.

    Academic text (1996)

  • Extragalactic astronomers have long recognized that galaxies are not uniformly distributed in space.

    Academic text (1990)

  • Neta Bahcall's research interests revolve around extragalactic astronomy and cosmology.

    Academic text (1993)

  • Astronomers study extragalactic objects to learn more about the universe beyond our Milky Way.

  • The extragalactic light from distant galaxies can sometimes be observed by powerful telescopes.

  • Researchers are interested in extragalactic phenomena that could reveal secrets about cosmic evolution.

Synonyms

intergalactic
vsextragalactic
  • Specialized
38 7.7

In the space between galaxies

occurs outside or beyond a single galaxy not between galaxies

Compounds

extragalactic nebula
  • Archaic
9.9

A large group of stars and dust outside our galaxy

Surface Forms

extragalactic positive

Morphology

extragalactic = galactic (transparent) = extra + galactic

The prefix 'extra-' meaning 'outside' or 'beyond' combines directly with the adjective 'galactic' to yield the straightforward meaning 'outside a galaxy'.

Etymology

Extragalactic comes from extra- meaning 'outside' and galactic, from galaxy, which comes from a Greek word meaning 'milk'. So, extragalactic describes something 'outside' our galaxy, beyond the Milky Way.