The Big Bang that created the Universe left traces of itself everywhere—an afterglow known as the cosmic microwave background (CMB). You’ve probably never thought to ask whether there’s a practical use for the CMB, but lo and behold, cosmologists found it: data encryption.
Turns out, being blown out of an airlock and turning into a meat popsicle after succumbing to hypoxia isn't so bad. At least, not when compared to the multitude of other deadly maladies that await you in the depths of space. Here are just a few ways that interplanetary exploration is conspiring to kill us all.
The world's filled with radiation. It's unavoidable. But at higher altitudes—say, in an airplane—you're hit with around 100 times more cosmic radiation from space. You can't dodge it, but you can measure what you're soaking in.