1) Are there any experiments/measurements of speed of light from distant (redshifted) galaxies? 2) Are there any experiments/measurements of luminosity distance of bodies moving away relative to us? 3) Where can I find type 1A supernova data (redshift and luminosity distance) for low z measurements, and high z. So far i found few docs in arxiv: "NEW HUBBLE SPACE TELESCOPE DISCOVERIES OF TYPE Ia SUPERNOVAE AT z>=1:" and "Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant" About 50 type 1A supernovas. Is there more recent and complete list?