47: The Milky Way Explodes!

A big win for astrophysics in the 2019 Nobel Prizes. And the new discovery that, not so long ago, the centre of the Milky Way galaxy exploded with stupendous energy, lighting up a region of our local universe called the Magellanic stream — enough that our distant ancestors a few million years ago would have seen it in the sky, and maybe wondered what the heck the gods were up to ...