Lucien:
Go travelling <a href=" http://viagrabuycheaponline.bid/maps/sitemap3.html#currant ">rice levitra 500mg street vivanza 40mg men video</a> The extraordinarily long lifetime Heeck calculated is an average. "There is the possibility that some photons very few, though have decayed," he said. (The universe is currently about 13.7 billion years old.) Scientific projects such as the Planck mission, aimed at measuring the afterglow of the Big Bang, could potentially detect signs of such decay, Heeck noted.
    Lucien写于2016/3/20 15:54:33