This video clip starts by showning two black holes orbiting around
each other against a gas nebula background. The camera pans out
and the orbiting black holes recede into the distance. The nebular
background is replaced with a grid which represents space. Waves
eminate from where the black holes are oribiting. These waves
represent the gravitational waves formed from the orbiting black
Courtesy of Dr. Michelle Larson, Center for Gravitational Wave
Physics, Pennsylvania State University. Used by permission.