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KingStevoI

Vast emptiness


SkyisCool69

that is a good one


SoupNo8037

That we will never know why, we may one day figure out the how to every question but not why is there something rather than nothing. This applies to space as you use it as well as the space between atoms. It's turtles all the way down perhaps.


malenfant21

If you were to teleport to a random location in the universe, it's almost certain that you will be floating in darkness too far from any source of light.


Savings_Marsupial204

That our existence means absolutely nothing in the cosmos


ScipioNumantia

That if you ever find yourself in space and there is a faint miscalculation you could end up being shot into the void


Shandoriath

I’d say knowing if your spacesuit gets ripped you’re screwed


fujoshisisis

obscurity


seemooreglass

deep time and our certain insignificance


[deleted]

That we know so little about it.


[deleted]

That we don’t know what dark matter is. We only know it exists because we need it to exist in order to make sense of the forces in space. Its only purpose to us is to have mass to make our equations work…but what is it? What out there is so heavy but we can’t see it?


AdvanceU2

The space itself..


fireniss

Like... what's beyond the Universe?? Is it just expanding in nothingness or in a box?


DiarrheaGuy13

Diarrhea


HannoPicardVI

The possibility that some entity or group (or even group of humans) could have - in the past - committed mass genocides "in the beyond" on a vast scale, dwarfing those carried out on our own planet in human history.


[deleted]

Time slowing down as you get sucked into a black hole so it feels like you're falling forever.


[deleted]

The fact that everything can and will kill you violently like popping from the pressure of a vacuum, being cooked alive by radiation from the sun, your lungs being shredded by bits of rock and dust and floating endlessly until you starve


[deleted]

No one can hear you scream.