Physicists study Physics - Cosmologists the heavens etc, [to name but a mere two] -- and never the twain shall meet - perhaps near Einstein somewhere -- but he wasn't sure about time -- look what happens when quantum physics is "attached" to cosmology -- they're incompatible -- if you think we know everything already and in say a thousand years we won't be laughing at such nonsense you're one optimist! Most of what cosmologists say is barely-understood science and a huge dollop of Art -- all based on "near" events [10b light years] -