According to the Big Bang theory the universe began about 13.7 billion years ago. In the beginning the universe was a very hot and dense place. Too hot for stars, planets, or even atoms to exist. Space expanded rapidly, cooled down and early atoms started to form. Gravity pulled these atoms together to form galaxies, stars, and eventually planets.
A galaxy is a collection of stars and gases held together by gravity. In the first scence the dancers move across the stage representing the growth of the universe from the formation of galaxies, our Sun, to Earth. The dancers eventually arrive at LIGO.
LIGO (Laser Interferometer Gravitational-Wave Observatory) is an experiment aiming to detect gravitational waves.
A century ago, Albert Einstein proposed the theory general relativity predicting the distortions in the fabric of space-time called gravitational waves. Gravitational waves are 'ripples in space-time' caused by the rapid motion of massive objects. Just like a boat sailing on a pond produces waves in the water, all moving masses in the universe produce gravitational waves in the fabric of space-time.
Spectatuclar events such as the collision of two black holes, supernova explosions, and even the Big Bang itself, produce waves strong enough to be detectable on Earth. This dance uses a sheet of cloth to represent gravitational waves, and two round balls that represent black holes merging
Gravitational waves arriving on Earth cause objectes to tend move alternativly closer and further apart. The dancers will show gravitational waves from a supernova. A supernova is the explosion of a massive star at the end of its life.
Gravity, the curvature of spacetime that keeps us on the ground, and causes the moon to orbit the Earth, and the Earth to orbit the Sun, is the sculptor of the entire universe.
This final dance shows once more the concept of black holes merging and the movement of gravitational waves traversing the universe.