The universe is expanding. And we know that because when astronomers look out at the galaxies around us, they see every galaxy moving away from us at a speed that increases in proportion to the distance. It doesn't mean that there's anything wrong about us, that everybody's moving away from us or that we're at the center of the universe.any other hypothetical observer in any other galaxy would observe exactly the same phenomenon. It's a remarkable fact of our universe. It is expanding.Now that um amazing ph ...

When we think of Albert Einstein, we usually picture that wild hair, the twinkle in his eye, and the man that somehow decoded the universe with math. But what if I told you that one of his greatest discoveries yet actually began as a mistake. Now, mistakes are something we all know too well, right.Maybe a wrong answer in an exam, a wrong decision, or a moment you thought, "Oh no, I've messed up." See, the thing with Einstein's mess up, though, is that it didn't just change his life. It changed our entire un ...