"कस्मोलोजी" का संशोधनहरू बिचको अन्तर

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* [http://ned.ipac.caltech.edu/ NASA/IPAC Extragalactic Database (NED)] ([http://ned.ipac.caltech.edu/Library/Distances/ NED-Distances])

* [http://www.aip.org/history/cosmology/index.htm Cosmic Journey: A History of Scientific Cosmology] from the American Institute of Physics