What does the Big Bang say about Dark Matter and Energy? Were they created in the Big Bang too, or were they always there?
Well if dark matter is supersymmetric particles or something then yes, it was created in the big bang. If not, who knows? As for dark energy I don't think there is much in the way of consensus about what the heck it might be, except in the vague cosmological constant sense. I'm not sure what you mean by this "always there" possibility though, the way the Big Bang goes is that all matter and energy "condensed" out of a kind of primordial energy soup, that may or may not have been of infinite density at some point. It doesn't say anything about the "moment of creation", or where all this is supposed to have come from.
I am saying that if DM/DE is made of WIMPS and MACHOS, then maybe they were here all along... maybe 4% of the universe Big Banged in a sea of Dark stuff.
Dark matter and dark energy are two completely different beasts. Dark matter is stuff - possible candidates are WIMPS and MACHOS. Dark Energy cannot even be characterized. The observational evidence says it is there, but there is no realistic physical description of what it may be. For example, the energy of the vacuum is a candidate, but 120 orders of magnitude too big. Using the cosmological constant of G.R. is a mathematical, but not a physical explanation.
Well nobody knows, that's why they still have vague placeholder names. Although we've had those names long enough now that even once we figure out what they are we'll probably keep the vague names for a while...
I honestly didn't think no one knew something this grand on the cosmic scale. No one has even a clue? Wow.
People have ideas, but there isn't enough data available yet to determine who, if anyone, is right yet. These are some of the biggest unsolved problems in astrophysics/particle physics/cosmology.
