From Stan Collins, Kendal, Cumbria, UK
If the lambda-CDM model of the universe doesn’t seem to be working, perhaps the reason is that one of its assumptions is wrong: that the distribution of galaxies is a cosmic web. It could equally be a cosmic foam, which would look much the same. The difference would be that the voids contain an active agent exerting pressure on the visible matter (23 September, p 16).
