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What do quasars have to do with black holes? ... How big are quasars compared to galaxies? ... Why do some quasars give off radio waves?
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www.phys.vt.edu/~jhs/faq/quasars.html
www.phys.vt.edu/~jhs/faq/quasars.html
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Quasars give off more energy than 100 normal galaxies combined. ... Many astronomers believe that quasars are the most distant objects yet detected in the universe. Quasars give off enormous amounts of energy - they can be a trillion times brighter than the Sun!
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starchild.gsfc.nasa.gov/docs/StarChild/universe_level2/...
starchild.gsfc.nasa.gov/docs/StarChild/universe_level2/quasars.html
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Quasars are peculiar objects that radiate as much energy per second as a thousand or more galaxies, from a region that has a diameter about one millionth that of the host galaxy. It is as if a powerhouse the size of a small flashlight produced as much light as all the houses and businesses in the entire L.A. basin!
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chandra.harvard.edu/xray_sources/quasars.html
chandra.harvard.edu/xray_sources/quasars.html
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Quasar - Wikipedia, the free encyclopedia
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A quasi-stellar radio source ( quasar ) is a very energetic and distant galaxy with an active galactic nucleus. Quasars were first identified as being high redshift sources of electromagnetic ener...
en.wikipedia.org/wiki/Quasar
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There are several types of active galaxies: Seyferts, quasars, and blazars. Most scientists believe that, even though these types look very different to us, they are really all the same thing viewed from different directions!
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imagine.gsfc.nasa.gov/docs/science/know_l1/active_galax...
imagine.gsfc.nasa.gov/docs/science/know_l1/active_galaxies.html
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Astronomy Picture of the Day ; Index - Quasars ... This index contains previous Astronomy Pictures of the Day (TM) sorted by subject and is updated monthly. Therefore, only APODs occurring before the beginning of this month are currently indexed. The chronological archive is completely current. ... Gamma-Ray Quasars...
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antwrp.gsfc.nasa.gov/apod/lib/quasars.html
antwrp.gsfc.nasa.gov/apod/lib/quasars.html
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Sep 22, 2009 ... Calculated probabilities of the optical object being a quasar, galaxy, star, or erroneous association, are also displayed. Paper submitted. ...
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quasars.org/
quasars.org/
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Some very distant galaxies called quasars are lit up dramatically by powerful black holes. Oddly, their radio emissions shimmer and twinkle when detected from Earth, even though radio waves are barely scrambled by Earth's atmosphere the way visible light is.
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www.space.com/scienceastronomy/quasar_light_021209.html
www.space.com/scienceastronomy/quasar_light_021209.html
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