The Royal Observatory Greenwich has announced the winners of the Astronomy Photographer of the Year 2011 – and they have a free exhibition of the winning shots. Personally my favourites are among the Deep Space category [There’s a surprise… – Ed]. All the entries can be viewed on the Flickr Astrophoto group. And it’s worth taking the time [6min 17sec] to watch the, unfortunately unembeddable, BBC audio slideshow of some of the winning images. Wondrous.