posted on Dec, 19 2012 @ 01:31 PM
As Arbitrageur said, I don't think there is anything unusual about this and further staples the expansion of the universe and the transmutation of
materials from Hydrogen into other materials.
During the early universe star formation would have been rapid due to the abundance of material and the constant fire crackers of big stars going
supernova every 100,000 years in the early galaxies. Supernova promote star formation, not only because they replenish space with their gasses, but
the shockwaves help seed new stars to form by increasing local matter densities.
It is totally natural that star formation has decreased, it is no shock either when you look at our local group, the sun and tau ceti being the only
yellow-ish ones around, everything else being cooler, smaller and more boring... the cooler stars have longer lives, so sure, seems all to make sense
that most stars forming now are cooler and live longer than before