Ναι τη γνωρίζουμε φυσικά Metres per second 299,792,458 Σχετικά με το blog: [uPDATE: The paper is now up on the arxiv preprint server. I took a look, and must say at first glance their reasoning looks solid. They appear to have the baseline distance nailed and the timing as well. However, the devil's in the details, and this isn't my field, so I'll be very curious to see how the pros in this discipline react to the paper.]