Asteroids are chunks of rock and debris left over from the formation of our solar system.  Occasionally, some of these space rocks bump into each other, sending them spinning off at incredible speed.  Two such wandering rocks, both around 10 meters in diameter, were recently discovered to be on trajectories that pass  close to Earth.  Though both are relatively small, and have very little chance of hitting the Earth, they'd make quite a splash if they did.  

This week on Deedlecast, heavy metal and complex molecules hurtle in with great force and effect.  Brace for impact. This could be a sustained barrage.