>>12249407>Earth and Solar system existing 22 billion years from nowlol
>>12252628First off, space is the absence of matter. It is, by definition, nothing.
Secondly, it's more complicated than that because in actuality "space" as we tend to think of it is filled with random particles and debris, photons, radiation, microscopic dust, etc. But ultimately "space" is utter nothingness.
Thirdly, the nature of space, time, and the physical nature of our universe, are basically the primary questions of Astronomy and cosmology. The problem is that you cannot study the nothingness of space by direct observation because, well there isn't anything to observe. So you have to use indirect methods like mathematical proofs and observations of the effects of particles and the "rules" of the Universe to figure out what is going on. That's why so much of astronomy is concerned with measuring things like gravitational effects or extremely distant light, etc. It's also why you get inexplicable shit like dark matter/energy (or the recently gaining traction hypothesis on negative mass). Basically, our primitive monkey brains cannot directly observe 99% of what's really going on in the Universe, we can only observe it's effect on the 1% we can see. Like a blind swimmer feeling the current in the water to determine what is happening around them.
