Gravitational Waves Result

I promise to do a whole series devoted this, relatively soon-ish, but as I've talked about on previous shows, one of the key predictions of General Relativity is that objects orbiting around each other while produce ripples in space-time (and how we interact with space-time through gravity) called gravitational waves. While indirect evidence that gravitational waves has been gathered by measuring the orbital period of pulsars around each other, LIGO and other experiments are trying to detect them directly on the Earth. To listen to a recent webcast on this project - and an interesting non-detection of gravitational waves from the early Universe, go here. Hope you enjoy!