Quasar (noun)

A celestial object that emits intense radiation and is thought to be a distant galaxy with a massive black hole at its center.

Origin:

From the acronym for quasi-stellar radio source, first used in the 1960s to describe these objects.

Examples:

  1. Quasars are some of the most distant and most luminous objects in the universe.
  2. The quasar's intense radiation is thought to be caused by matter falling into its massive black hole.
  3. Scientists have used quasars to study the early universe and the nature of space and time.
  4. The quasar's light has taken billions of years to reach us, allowing us to see deep into the past.
  5. Some scientists believe that quasars may be the cores of young galaxies in the process of forming.
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