A new look at the cosmos?

The universe may have a few surprises for us yet. As the cosmos fades, what does it fade toward? Will it be something we can still detect?

As we say "so long" to radiation, stars and matter, what will there be to make the universe knowable (to us, if we are around to discover)?

Without stars and radiation, the cosmos will get quite cold. The spectra to detect something will probably be shifted. Perhaps there will be detection in the deep, deep blue to be found. Perhaps some things can be found in deep ultra violet. Whatever it may be, it will not be in the ranges we are used to. It would be wise to start adjusting and make it the new routine if we want to comprehend the cosmos more fully.  A lot of subtleties to be found. For an example, we may have to contend with some thing that pulls galaxies along one direction and may be outside of our cosmos, called dark flow.

It may be kept in mind, with the physical astronomy about 100 years ago, that a theorist named Albert Einstein stated the universe is static. That was later challenged by physical observations of a couple astronomers, e.g. de Sitter in 1916, and  Alexander A. Friedmann and was published in 1924, indicating expansion, which both produced a major revision on the cosmos. Standardized views on aspects of the cosmos may once again be challenged resulting in modifications or new revisions. Not all equations fit all observations all the time.  The Universe is too big for observation astronomy to be conclusive on its own. A number of problems are found to challenge the inflation models. One, is determining if inflation can match with a hot universe, and another is trying to figure if the dimension dynamics of dark energy is congruent.

As scientists long before this entry have said: it is evident that the end of the cosmos will not share or resemble what it was in the beginning. The COBE satellite of early 2000's showed the matter presence is insufficient to cause a contraction of the cosmos.

There is a lot of problem fitting the nature of said 'dark energy' in with the parameters of conventional models of the universe, including general relativity. Gauging doesn't match up. It is not yet time to assume "settled science'.