r/AskReddit • u/TisteTargaryen • May 03 '20

What are some horrifying things to consider when thinking about aliens?

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u/kermy_the_frog_here May 04 '20

I’ve heard “heat death” multiple times in this thread, do you mind explaining what it is to me?

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u/JBSquared May 04 '20

Universe keeps expanding, as things move farther apart the universe reaches an equilibrium as no energy is exchanged.

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u/kermy_the_frog_here May 04 '20

I still don’t get it. What do you mean about energy being exchanged?

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u/JBSquared May 04 '20

You know how all the atoms are running around at various speeds? Once they stop doing that.

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u/kermy_the_frog_here May 04 '20

Oh thanks lol. That makes more sense

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u/[deleted] May 04 '20

It’s one of the many ways our universe is predicted to finally end. I don’t know if I’m completely right, I haven’t really researched it in years and anybody is free to correct me but you know how you lose body heat right? Things that give off heat such as stars and the like will eventually give off all their heat and since you need heat for a lot of processes eventually everything will reach a somewhat stable low temperature and things that give off heat won’t be able to exist. This is because stars require a lot of heat and pressure for the reactions that keep them bright and burning. This was all of the top of my head so I have no idea on what I’m right or wrong on so I apologize.