Black body radiation is interesting and does make sense, but then it brings up another question, which is:

"If there is black body radiation everywhere in space -- then why doesn't space itself heat up until it's eventually the temperature of the Sun?"

Maybe objects in space, such as planets, act as "heat drains" for the rest of space... that is, all of the heat (information) in space eventually winds up at a physical planet, or other object in space...

If this is true, then this leads to an interesting identity, which is basically that every element, that is, everything on the periodic table from hydrogen on downward, is not just an element, not just matter, but also has an identity in terms of heat/information...

In other words, every single element (and by extension substance) is what it is, but could also be thought about simultaneously as heat, and simultaneously as information.

Which brings up endothermic/exothermic chemical reactions.

That is, chemical reactions between two or more elements (for example, hydrogen and oxygen combining to produce water) where heat is produced (combining them via fire), or where heat is consumed (note that the separation of water into hydrogen and oxygen via electrolysis, as far as I know, is neither endothermic or exothermic -- so where did the information go? Into the electricity? It's possible, we can't rule out that possibility...)

And then the next question... Do chemical elements combined as a compound (such as water) then store the information as heat from the reaction somehow, or does it somehow dissipate, does that information somehow come back when they are separated?

I don't know the answer to any of these questions; I'm just thinking aloud, but my intutive mind says that there may be something to discover there...

Yeah information <=> energy. Change of state is equivalent mathematically to movement in a "dimension." Action in physics is energy times time. Really just a way to measure the total number of absolute changes that have occurred. All energy causes change, it is all linked to entropy and information, it is likely zero in total... https://en.wikipedia.org/wiki/Zero-energy_universe

I like everything that you've said, but of particular interest is this:

Change of state is equivalent mathematically to movement in a "dimension."

I'd love to discover more information about that idea!

URLs and/or book recommendations about that topic would be most appreciated!

All the quantum numbers that define a particle can be looked at as values within a dimension. It's possible that some are redundant in the standard model, or not the greatest basis.

The simplest states that exist in the largest dimensions we know of are the position/spacetime states. String theory posits that these little tiny looped strings of matter, exist in dimensions that are on the verge of a planck length. They just loop around. If you went from where you are, to where I am, you'll have looped around those tiny string dimensions a crap ton of times.

Utterly fascinating!

Write a blog, please!

I'd read it...

https://churchofthought.org :-)