You searched for: “quasar
quasar (s) (noun), quasars (pl)
Short for quasi-stellar radio source: A quasar is a compact, starlike celestial body with a power output greater than the entire galaxy.

The quasars are believed to be the oldest and most distant objects ever detected, quasars are billions of light-years from earth and moving away from us at nearly 80 percent of the speed of light.

Quasars appear to be stars, but they have large red shifts in their spectra indicating that they are receding from the earth at great speeds.

The exact nature of quasars is still unknown, but many believe they are the cores of distant galaxies, the most distant objects yet seen.

Quasars were first identified in 1963 by astronomers at the Palomar Observatory in California.

This entry is located in the following unit: quasi- (page 1)
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1. A mysterious, "quasistellar", or star-like, object in a galaxy's core which is very small, very bright, and very distant.

Most quasars are strong sources of radio energy.

2. An exceptionally powerful, yet very compact extragalactic object, whose exact nature is still uncertain.

Observations suggest that quasars may be the hyperactive nuclei of galaxies, while theory indicates that the high luminosity which is 100 to 1,000 times that of normal galaxies, could be associated with a supermassive black hole.

This entry is located in the following unit: Astronomy and related astronomical terms (page 21)
quasar: quasi + stellar
1. One of over a thousand known extragalactic objects, starlike in appearance and having spectra with characteristically large redshifts, that are thought to be the most distant and most luminous objects in the universe.
2. A blend of quasi and stellar.
  • Quasi: As if; as though; as it were; in a manner sense or degree; having some resemblance to.
  • Stellar: Relating to, consisting of, or like a star or stars.
This entry is located in the following unit: Blends of Words: Portmanteaus or Portmanteaux + (page 2)
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pulsar: pulse + quasar
1. A small dense star that emits brief intense bursts of visible radiation, radio waves, and X-rays, and is generally believed to be a rapidly rotating neutron star.
2. A blend of pulse and quasar.
  • Pulse: A brief temporary change in a normally constant quantity, e.g. in a voltage, or a series of intermittent disturbances that are regular in form and frequency of occurrence.
  • Quasar: A compact object in space, usually with a large red shift indicating extreme remoteness, that emits huge amounts of energy, sometimes equal to the energy output of an entire galaxy.
This entry is located in the following unit: Blends of Words: Portmanteaus or Portmanteaux + (page 2)