One day all the stars will fall from the sky, but they won't fall to earth.

Scientists now know that the universe is not only expanding but also that expansion is gaining speed. There's a point at which we can't see or detect anything; that's because the far "edge" of the universe is moving away from us - relatively - at the speed of light.

As this expansion continues, in hundreds of millions of years, the galaxies we're now abl…