https://www.newscientist.com/article/mg21328460-500-stephen-hawking-at-70-exclusive-interview/ > STEPHEN HAWKING is one of the world’s greatest physicists, famous for his work on black holes. His condition means that he can now only communicate by twitching his cheek (see “The man who saves Stephen Hawking’s voice“). His responses to the questions are followed by our own elaboration of the concepts he describes. > What has been the most exciting development in physics during the course of your career? COBE’s discovery of tiny variations in the temperature of the cosmic microwave background and the subsequent confirmation by WMAP that these are in excellent agreement with the predictions of inflation. The Planck satellite may detect the imprint of the gravitational waves predicted by inflation. This would be quantum gravity written across the sky.