I just wrote this article and I would like your comment:
The Universe Will Not Die a Heat Death
We assume that the universe is expanding according to the Lambda-CDM model with a fixed Lambda constant.
Imagine a central star, like our sun. Two artificial satellites are orbiting this sun in circular orbits in opposite directions. As the universe expands, the orbits of the satellites are elevated, and the satellites thus gain mechanical energy (the sum of potential and kinetic energy). This energy can be released by causing the satellites to collide or by simply having them graze each other. As a result, some of their kinetic energy is converted into heat, which can be radiated away as thermal radiation, and the satellites descend to lower, more inward orbits. The process can then begin anew.
i like it. There has to be ways to make some cosmological theories where the universe is eternal : in this direction, please also look at my post here :
... "quantum particle creation could play a role in the creation of matter in the universe after the end of an inflationary era" ...
... at lemmy world.
please see my comment at the linked post