The new Brian Cox series on the Universe is on the BBC iplayer https://www.bbc.co.uk/iplayer/episode/p09ybpb8/universe-series-1-1-the-sun-god-star I have watched this first episode and picked up some new ideas. I hadn't heard about the dark matter cosmic web but it makes sense as I knew that dark matter was supposed to be where the galaxies condense. I'd also managed to miss the Parker Solar Probe.