You certainly understand the critical elements of the discovery of gravitational waves and what it means for Einstein’s legacy and the future of physics. And I sure as hell understand it. But on the off chance you come across someone whose understanding of these matters is not quite as absolute, here’s Brian Greene to explain things. And here’s an excellent video and comic strip that explains gravitational waves and a bunch of other stuff about the universe.

+ Aeon: In a white dome on a bare mountain, six of us are road-testing life in a Martian colony.