I once calculated using the temperature of the cosmic background radiation, the temperature of quark confinement, the volume of a sphere, and rough estimates of cosmological and geological timescales to find that 6 days = 15.4 billion years, and the end of the 7th day is in a few hundred thousand years. (Yes this is based on Gerald Shroeder)
Not as cool as the 2012 Mayan end of the world date, and both sides have shredded Shroeder's argument for the alignment of Genesis timing (I find the critiques misunderstand either the science involved or the Bible). I would like to think though, that humanity will fully explore the universe before time is up.
Dunno.
The universe is a BIG place, a few hundred thousand years is such a short time.