schwit1 writes with news that cosmologist Lawrence Krauss has set the scientific community abuzz by confirming a rumor floating around for the past several months that the LIGO experiment may have discovered gravitational waves. The excitement centers on a longstanding experiment known as the Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) which uses detectors in Hanford, Washington, and Livingston, Louisiana to look for ripples in the fabric of spacetime. According to the rumors, scientists on the team are in the process of writing up a paper that describes a gravitational wave signal. If such a signal exists and is verified, it would confirm one of the most dramatic predictions of Albert Einstein’s century-old theory of general relativity. Krauss said he was 60% confident that the rumor was true, but said he would have to see the scientists’ data before drawing any conclusions about whether the signal was genuine or not. But many scientists are trying to calm the hype. Krauss admits he hasn't spoken to anyone within the LIGO team. Further, to enhance the integrity of their work, the LIGO team will occasionally "purposefully inject false signals in to their data to test the sensitivity of their analysis techniques and to keep people honest." A LIGO spokesperson said, "We’ll certainly let you know when we have news to share."