quasars News

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Astronomers Observe Black Holes Devouring Matter

(June 12) -- Astronomers at an Australian university have developed a new technique that lets them see matter falling into huge black holes millions of miles away. Their secret? Use a galaxy, a collection of millions of stars, as a lens. The gravitational pull of black holes compresses and super-heats the matter nearby,...

Background on quasars

A quasi-stellar radio source ("quasar") is a very energetic and distant active galactic nucleus. Quasars are extremely luminous and were first identified as being high redshift sources of electromagnetic energy, including radio waves and visible light, that were point-like, similar to stars, rather than extended sources similar to galaxies.

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