On August 19, 2025, at 7:00 PM, Hamptons Observatory will present a free lecture and book-signing, IN-PERSON at the East Hampton Library, by Dr. David John Helfand, president of Quest University Canada from 2008 to 2015, former Chair of the Department of Astronomy at Columbia University and Co-Director of the Columbia Astrophysics Laboratory. Dr. Helfand will discuss the subject of his latest book, “The Universal Timekeepers: Reconstructing History Atom by Atom,” which demonstrates the power of science to unveil the mysteries of remote times and places that were thought to be unreachable. After the talk, Dr. Helfand will sign copies of his book, which will be available for sale. For more info and to register, go to: https://HamptonsObservatory.org