Well, that was a close one…

… but you probably didn’t even notice it. Earlier this week, we apparently came within a cosmological gnat’s whisker of colliding with an asteroid of similar size to the one that caused the Tunguska astrobleme:

The asteroid, dubbed 2008 DD45, whizzed just 72,000 kilometres above the Earth’s surface. That is less than a fifth of the distance to the Moon and just twice the distance to geosynchronous satellites.

Yikes. It was first reported on Saturday; that’s all the warning we might have had. And had it been a bit bigger, it could have caused a planetary extinction event that would make the climate crisis look like a tea-party. Chalk another one up to human luck, eh?