Einstein predicted, that a burst of waves created as two black holes, spiraled into each other, 1.3 billion light-years away. Physicist, working with the Laser Interferometer Gravitational-Wave Observatory (LIGO), stated that they have seen the gravitational waves.
The discovery of this on February 11, led to the birth of a new field of Science called, "Gravitational Wave Astronomy". LIGO had detected a second black hole using the interferometers. Other instruments are for upgrades to further prove this theory.
Gravitational waves, are the ones that keeps each planet away from each other. The LIGO has two four kilometer- long with mirrors at both ends, enclosed inside a big vacuum chamber. By using the LIGO interferometer Physicist were able to compare width of of a proton. LIGO then proved Einstein's Theory "General Relativity".
Various Instruments to detect gravitational waves are being developed
One of the instrument is, the upgraded VIRGO detector, found in Italy, that will be functional next year. Kamioka Gravitational Wave Detector, is being built by Japanese Physicist. LIGO is planning to add a detector in India by the early 2020s.
Physicist are also planning to launch three Laser Interferometer Space Antenna (LISA) spacecraft. The three LISA spacecraft will form triangular interferometer, with arms millions of kilometers long around the sun, to detect gravitational waves.
In order for the physicists to study that behemoth in a larger scale LISA must detect mergers of smaller supermassive black holes , slow windup of two black holes spiraling together before ground-based instruments do. According to studies the discovery of gravitational waves has changed a lot of things in Science, that will lead to a lot more new discoveries.
