Hubble constant

At Horizons EU we are told, “New efforts to figure out just how fast the universe has expanded since the Big Bang, a speed known as the Hubble constant, could upend current theories of physics , according to some scientists. If current theories were upended, who would know. Consider these stories from this month alone: Discover: Even the best dark matter theories “are crumbling” Is there a crisis in the physics of our time? The cat is back: Is quantum theory dead, alive, AND contradicting itself? “Perhaps physics has slipped into a post-empirical era…” That’s a lot of fundamental uncertainty, as opposed to the endless quibbles of any scholarly discipline. Ultimately, more accurate measurements would establish the correct value of Read More ›

And cosmologists race to win a “great cosmic bake-off” to produce a new one, says astrophysicist: Just as cosmological measurements have became so precise that the value of the Hubble constant was expected to be known once and for all, it has been found instead that things don’t make sense. Instead of one we now have two showstopping results. On the one side we have the new very precise measurements of the Cosmic Microwave Background – the afterglow of the Big Bang – from the Planck mission, that has measured the Hubble Constant to be about 46,200 miles per hour per million light years (or using cosmologists’ units 67.4 km/s/Mpc). On the other side we have new measurements of pulsating Read More ›