Watch the Q&A for Sean Carroll's lecture on Einstein's equation explaining spacetime. You can watch the original lecture here: The original lecture and this Q&A were recorded at the Ri on Monday 14 August 2023. Our lecture Q&As are usually a perk for our YouTube Science Supporters, as a thank you for helping us bring science to more people, but we're publishing this one for everyone as Sean's talk has been so popular. A huge thank you to our YouTube members for helping us to bring you more science. You can join them here: Subscribe for regular science videos: The Ri is on Twitter: and Facebook: and TikTok: @ri_science Listen to the Ri podcast: Our editorial policy: Subscribe for the latest science videos: Product links on this page may be affiliate links which means it won't cost you any extra but we may earn a small commission if you decide to purchase through the link. #EinsteinEquation, #SeanCarroll, #PhysicsQandA, #QuantumPhysics, #ScienceExplained