Gabriela González, former Spokesperson of LIGO, explains gravitational waves, what it was like to discover them, and what they might tell us about the Universe.
How does LIGO detect gravitational waves? Here is a quick introduction.
Kip Thorne explains how to explore the Universe with gravitational waves.
Can we define an event without reference to space and time? And why would this be useful? Laura Mersini-Houghton explains.