Word: quasars
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...photographs from the University of Heidelberg, Dr. Harlan Smith of the University of Texas reported that the light from the heavenly body known as 3C-273 pulsates regularly on a 13-year cycle. Not that pulsating starlight is rare, but 3C-273 is not a star. It is a "quasar" (quasi-stellar object) that sends out powerful radio waves as well as light and is believed to be about 1 billion light-years away from the earth. Most astronomers think it is a galaxy in the process of exploding...