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Einstein’s Eclipse

The image taken of the total solar eclipse of May 29, 1919, was among Albert Einstein’s possessions when he died in 1955, then Professor Emeritus in the School of Mathematics. The image, taken by astronomer Arthur Eddington and now in the collection of the Institute’s Shelby White and Leon Levy Archives Center, provided striking evidence of Einstein’s general theory of relativity because of the way starlight was shown to curve around the mass of the Sun. 

IAS News

IAS Statement on Revised Executive Order

March 07, 2017
As an institution, we oppose the revised travel ban on the principles of justice and non-discrimination and stand in unison for the advancement of knowledge without borders and prejudice.


Curiosities: Light’s Revelations and Mysteries

By Robbert Dijkgraaf

Light is the great unifier. John Wheeler, the beloved Princeton physicist, used to draw the universe as a big capital U with a little eye on one leg, signifying that we, human beings, are the eyes of the universe looking back at itself. The universe after many, many billions of years formed human life on planet Earth, and we use light to observe and understand the universe. 

In the Media

Eclipse Hunter Reveals the Science That Can Only Be Done in the Dark

August 10, 2017
Jay Pasachoff, former Member in the School of Natural Sciences, has seen 33 total solar eclipses, and another 32 if you count partial eclipses and annular eclipses.