| Bolton later used it to pinpoint more than 8,000 extragalactic radio sources, including hundreds of quasars. |
| If Lorentz invariance were violated, the gamma-rays would pass right through the extragalactic infrared fog with insufficient energy to cause annihilation. |
| The image of the cosmos as seen at VHE is becoming richer with the addition of a new type of extragalactic sources, the radiogalaxies. |
| In the 1930s and '50s he made estimates of the age of the universe from meteorites and from galactic and extragalactic statistics. |
| Scientists at DRAO have a wide range of interests, from solar system to extragalactic research. |
| The number of these sources is consistent with the expected number of extragalactic sources in the background sky. |
