The universe could just up and explode in a few billion years.
Who knows if human beings will survive to this point, but the issue is that everything is so tenuous! They’re calling this potential explosion the “Big Rip,” and while it’s just a theory, it’s a plausible one. According to The New York Times, “Recent astronomical measurements, scientists say, cannot rule out the possibility that in a few billion years a mysterious force permeating space-time will be strong enough to blow everything apart, shred rocks, animals, molecules, and finally even atoms in a last seemingly mad instant of cosmic self-abnegation.”
Honestly, at this point, that’s what we deserve.
Space smells really bad.
It’s true, and as someone who does not take kindly to bad smells, this might be the most horrifying fact of all. But here are some ways the smell of space has been described by people who’ve been there:
“Carries a distinct odor of ozone, a faint acrid smell.”
“Just imagine sweaty feet and stale body odor, mix that odor with nail polish remover and gasoline … then you get close!”
Galaxies eat each other.
No biggie. But “galactic cannibalism” is totally a thing. A 2003 study discovered that the way large galaxies grow is my “gobbling up” smaller galaxies, according to Universe Today. OK they don’t “eat” galaxies, per se, but they do bring them into themselves through “gravitational interactions” and just kind of fuse together until they are one big galaxy.
But that’s not terrifying at all!
Not, at least, in comparison to our next fact, which has to do with how astronauts sleep in space…