Back when the Earth team were working on the app for the web, they only had two ways to bring native code into a browser. They chose a method called "Native Client," which only Chrome supports but promised to create another version using WebAssembly, the open standard for running native code in the browser that's still in development. Now that WebAssembly has advanced enough for the team to use, they're finally been able to show off what the Firefox port of Earth would look like.

The great thing about WebAssembly is that it's supported not just by Chrome and Firefox, but also by Safari and Edge. So, once Google is done porting Earth over, you might be able to access all of its satellite imagery on almost any browser you want.