This conversation with between Calla and managing editor Tariq Malik originally aired on Facebook Live on June 15, 2016.

Gravitational Wave Detector Finds Double Colliding Black Holes — Again (Woot! )

Distortions in the fabric of space-time, which were predicted by Albert Einstein a century ago, have been directly detected for the second time.

Approximately 1.4 billion light-years from Earth, two black holes spiraled around each other and collided, creating ripples in the fabric of space-time. These ripples, known as gravitational waves, arrived at Earth in December 2015, and were detected by the Laser Interferometer Gravitational Wave Observatory (LIGO).

The LIGO collaboration announced the finding today (June 15) during a news conference at the 228th meeting of the American Astronomical Society (AAS) in San Diego. The gravitational wave signal — officially known as GW151226 — was detected by LIGO on Dec. 25, 2015, at 11: 38 p.m. EDT (0338 a.m. GMT on Dec. 26). [Again! Gravitational Waves Detected from 2nd Black Hole Collision]