[chasing]

> a swarm of unguided relativistic projectiles

In a sense, this is essentially what the universe is.

[tgflynn]

I don't think you'll find 0.2c relative velocities except near very energetic phenomena, especially not of things that are too small to easily see coming.

[skykooler]

Cosmic rays are far too small to easily see coming, and we get those all the time here.

[tgflynn]

I think it should be clear from the context that this discussion was about macroscopic objects. Cosmic rays don't carry the kinetic energy equivalent of a medium size nuke.

[maxxxxx]

True, the universe is generally a pretty unfriendly place that tries to kill you in any possible way.

[amackera]

To be fair, the universe was pretty friendly and created us in the first place.

[Razengan]

Technically, we are the universe trying to understand itself.

[TheOtherHobbes]

Technically, we may be the universe trying not to kill itself.

[hinkley]

Technically, we may be the universe trying to kill itself.