Astronomy, Cosmology, & Physics round up, November 2019: Hubble Constant mystery, Moments before the Big Bang, Universe connected by giant structures, Dinosaurs on the other side of the galaxy, Starlink space light pollution, flat or spherical universe?

The Hubble constant: a mystery that keeps getting bigger: Scientists have found a discrepancy in estimates for the rate of expansion of the universe. Why is this and what does it mean? https://www.theguardian.com/science/2019/nov/02/hubble-constant-mystery-that-keeps-getting-bigger-estimate-rate-expansion-universe-cosmology-cepheid We (more…)