This is another very interesting image showing the timescale and the computed waveform of the black holes collision: decreasing distance, increasing velocity/mass, the large spike of collision/merger, the disappearance of the signal after the merge.
There are some very clear explanations of a phenomen which up to a few decades ago only some of the specialized physicists fully understood.
This is also a new kind of telescopy, we'll be able to observe violent phenomena as neutron star collisions, supernovae, gamma ray bursts and study the information conveyed by the gravitational waves.
The gravitational waves of extremely low frequency whose wavelenght can span a universe are also believed to be the original quantic fluctuations just before the inflation of the universe, right after the big bang, such quantic fluctuations were present in the primal seed and are allegedly the cause of the unlikely dishomogeneity of the universe.
