I think this guy is pretty excellent and, if you feel adventurous he does tackle some really weighty subjects in astrophysics and cosmology
However this one, just released, is relatively easy on the brain, I think! And brings us up to speed on some recent findings on galaxies and dark matter.
However this one, just released, is relatively easy on the brain, I think! And brings us up to speed on some recent findings on galaxies and dark matter.