Lensed quasars

Hecht, J.
February 1992
New Scientist;2/8/92, Vol. 133 Issue 1807, p24
Reveals proof that Einstein's theory of gravity holds over very large distances with the discovery of a quasar which was subjected to the phenomenon of gravitational lensing. Explanation of gravitational lensing; Discovery of this quasar by the Hubble Space Telescope; What the failure to find more of these means.


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