Show Notes

💥explosion noises💥

Michael Bay blows things up. Layers of subtlety.


Just how very very large and unavoidably catastrophic the impactor in this movie is. Size vs Deep Impact. Size vs the dinosaur impactor.

Visibility of this asteroid in the sky

Angular size of this asteroid. Calculations from size, speed and distance suggested in the film (14 arcseconds). Using Ceres as a baseline for figuring out how bright this asteroid would be in our sky.

Tracking potential impactors

We do this irl! It helps when they’re on our solar plane. Comets can come in all sideways, which can make thing difficult. But we do okay tracking a lot of those too. Apophis.

Asteroid belts etc

Common misconceptions about the density of objects in the belt. It’s really diffuse in general! You won’t need to fly your shuttle like a jet in not-asmosphere.

Things hit earth

Lots of past impactors. Micrometeorites. Modern impacts like Chelyabinsk or Tunguska. Russia is basically a meteor magnet.


Drilling and art vs science. Astronaut training and why it’s not that big a deal and you can pretty much skip most of it and hop on an asteroid. 😎

Misc Physics

Nonsensical simulated gravity. Slingshot maneuvers. Steeling energy from moons and planets.


  • science fiction, 
  • science, 
  • space, 
  • impactors, 
  • apocalypse, 
  • astonomy