Have we finally found one of the most elusive phenomena in astronomy? NASA

At 10.30 a.m. EST (3.30 p.m. GMT) today, press conferences are being held around the world to announce the latest findings regarding gravitational waves from the Laser Interferometer Gravitational-Wave Observatory (LIGO).

First theorized by Einstein 100 years ago, gravitational waves are predicted ripples in space-time caused by massive events or objects in the universe. But no detection has ever been made, as the ripples are incredibly tiny and almost impossible to detect.

Is that all set to change, though? You'll find out later today. You can watch a webcast of the press conference being held in Washington D.C. live below from 10.15 a.m. EST.