Add Yahoo as a preferred source to see more of our stories on Google. The light echo around the star V838 Monocerotis as seen by the Hubble Space Telescope in November 2005. (NASA, ESA and H. Bond ...

Almost two decades ago, physicists detected a phenomenon known as the spin Hall effect 1, 2, in which an electric field separates the electrons in a material on the basis of their intrinsic angular ...

When I was a teenager, I was—shockingly, I know—deeply nerdy. At a science-fiction convention, I bought a button that read, “186,282 miles/second: Not just a good idea, it’s the law.” It was poking ...

The new second-generation Eve Motion HomeKit sensor adds Thread support, an integrated light sensor, and costs less than the previous model. Six years after its original motion sensor was released ...