True vacuum. Oddly, there is actually stuff in there; albeit “virtually“. Quantum field theory suggests that the void between matter and particles holds some sort of vacuum-energy that may create (only to in picoseconds neutralize) “virtual particles”.
Know that this is nearly impossible to observe, but the math and theoretical models infer this. The guess is particle-antiparticle pairs manifest then cancel out. Quantum-thermodynamic-system hypotheses have failed to find another explanation for this peculiar energy in the vacuum. Otherwise, it’s mysterious but necessary that the physical fields are there and fluxing. It’s just beyond our current comprehension why or what is exactly going on in spatial voids and non-ordinary-matter zones.
Nothing is something.
The Broad Spectrum Life 
Otherwise it would be an terrible waste of space.
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man… I was going to write “awful” and then my brain space changed to terrible but kept the “an”. (*digital shrug*)
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Even if you space out, there is still stuff going on up there.
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Right… otherwise… it would be a waste… I agree with your post Pro T. LOL.
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Dear.there are the last layer of atmoshphere of earth but still now not any scienctists can descover the definite theory about the stuff.
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Dear!!there will be other space between outer space n inner space.what is the secrets in space.can we imagine about that.
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You’re quite right. This is theorists speciation without seeing or being there. Imagination thus goes rampant. 🙂
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Thanks ,dear!!
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It’s where I keep my best bag of marbles and my teapot.
– Esme grinning upon the Cloud
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A wise place to leave such an important cache.
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