Einstein's Unfinished Symphony: Listening to the Sounds of Space-time

In a handful of observatories around the world, scientists are waiting, and listening. Their quest: to be the first to detect gravitational waves, infinitesimal quakes that stretch and compress space-time and could add a brand-new dimension to our universal knowledge-allowing us to hear a sun going supernova, black holes colliding, and perhaps one day, the remnant rumble of the Big Bang itself...