A Moment of Gravity Marcelo Alonso Citation: Physics Today 55, 2, 74 (2002); doi: 10.1063/1.1461340 View online: https://doi.org/10.1063/1.1461340 View Table of Contents: https://physicstoday.scitation.org/toc/pto/55/2 Published by the American Institute of Physics ARTICLES YOU MAY BE INTERESTED IN Can the speed of gravity Physics Today 56, 9 (2003); https://doi.org/10.1063/1.4796998