The Big Bang's final and most difficult prediction: confirmed

The Big Bang's final and most difficult prediction: confirmed

The idea of the Big Bang has captivated the imagination of humanity since it was first proposed nearly a full 100 years ago. Since the Universe is expanding today (as observations have indicated since the 1920s), then we can extrapolate back, earlier and earlier, to when it was smaller, younger, denser, and hotter. You could go back as far as you can imagine: before humans, before the stars, before there were even neutral atoms. At the earliest …