>>511190180 (OP)this isn't "new science" - there have been three conflicting theories pertaining to the long-term fate of the universe based on a certain constant in cosmological physics.
the exact details escape me but it revolves around the question of whether that constant is positive, negative, or zero.
the three possible outcomes are either (1) indefinite constant expansion where the endgame is heat death, (2) indefinite exponential expansion where the endgame is something known as the "big rip" where all particles are torn apart by dark energy and approach infinite distance from each other, and (3) the "big crunch" where the entire universe collapses on itself and contracts back into a singularity (the state before the big bang).