Cosmic Distance Ladder - Terrance Tao (updated 10-26-09)
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The Cosmic Distance Ladder Terence Tao (UCLA) Orion nebula, Hubble & Spitzer telescopes, composite image, NASA.
The Cosmic Distance Ladder Clay/Mahler lecture series Terence Tao (UCLA) Orion nebula, Hubble & Spitzer telescopes, NASA.
