Radio-astronomers form telescope the size of Earth

(PhysOrg.com) -- Radio telescopes around the world will join forces this week to carry out a unique observation of three quasars, distant galaxies powered by super-massive black holes at their cores.

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<p><a href="http://www.physorg.com/news151078629.html">Radio-astronomers form telescope the size of Earth</a></p> <p>(PhysOrg.com) -- Radio telescopes around the world will join forces this week to carry out a unique observation of three quasars, distant galaxies powered by super-massive black holes at their cores.</p>