Having been nasty to Ethan at Starts with a Bang recently I’m happy to report that I can be nice to him today. He has started a series on the nature of dark matter and why he and most other astrophysicists believe that it must exist. Judging by the first installment this is going to be a really good educational experience. I for one am really looking forward to the next episode.
While we’re on the subject of astrophysics the wonderful people (I seem to recommend everything that they post!) at ‘we are all in the gutter‘ (this time it’s Rita [is she a lovely meter maid?]) have a great post up explain the function of the latest satellite telescope Planck.