Gravitational Waves Detected!
A worldwide team of scientists from LIGO, the Advanced Laser Interferometer Gravitational-Wave Observatory, announced last week that the first direct observation of gravitational waves -- ripples in space-time caused by bodies in motion orbiting each other -- had been detected. This is a major scientific achievement, which opens up a whole new branch of astronomical investigation.
Joshua Smith talks to Michael about all this. Joshua Smith is the director of the Gravitational-Wave Physics and Astronomy Center (GWPAC) and is an associate professor of physics at California State University, Fullerton.
For more on gravitational waves, check out "Hearing the Universe for the First Time," at revcom.us.