On Thursday, February 18 at 19:30 GMT:

Gravity can exist in wave form, but why does it matter? For scientists, the discovery of gravitational waves opens up a new field in astrophysics that could possibly help us learn more about black holes, what space is made of, and how our universe originated. The discovery also provides more evidence of Albert Einstein's century-old prediction that gravity warps space and time. We’ll ask physicists about the significance of gravitational waves at 1930GMT.

Joining this conversation:

Katie Mack @AstroKatie
Theoretical Astrophysicist

Ian O’Neill @astroengine
Space Senior Producer, Discovery News

Nergis Mavalvala
Professor of Astrophysics, MIT

What questions do you have about gravitational waves? Share in the comment section below.