| Quasars | |
| What are quasars? | |
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3C279 , a faint, starlike object in the visible sky.In June of 1991 a gamma-ray telescope onboard NASA's orbiting Compton Gamma Ray Observatory discovered that it was one of the brightest objects in the gamma-ray sky. Shortly after this image was taken the quasar faded from view at gamma-ray energies. Astronomers are still trying to understand what causes these misterious objects to flare so violently. Another quasar,3C273, is barely visible around the top right corner. |
| The size of quasars. | |
| Quasars are this big... | |