Twitter obviously has a theory...
After all, it is a once-in-a-decade kind of event....
The incredible display will be visible again on Monday evening.
Those lucky enough to catch the night sky must've felt the stars aligned.
But before you ask, it's nothing to do with wizards, witches or magic.
The last time it zipped past the planet was during the Stone Age – when Neanderthals roamed the Earth.
Something on the surface of Mars bears a resemblance to a certain animal.
And you thought you were the only indecisive one.
We should all be excited about this, apparently.
A third of the world's population now can't see any stars at all. That's pretty bleak.
About Space Space news stories, features, pictures and video from the Huffington Post UK. Whether it's Nasa, ESA or something a bit more strange, we've got you covered up to, and beyond, the Final Frontier.