Just subscribed to her channel, thanks for sharing, I subscribe to many astronomy and physics channels and hadn't seen this one yet. Had heard about being able to detect gravitational wave from colliding black holes and neutron stars but really awesome that it could potentially be used to see back in time to so close to the big bang as well.
The only reason I posted this was I thought how awesomely cool it would be to burn some tape and pop a balloon with this laser.Thanks for sharing Steve. And nice to see you Simon.