The Royal Museum Greenwich has announced the winners of the Astronomy Photographer of the Year for 2021. Zhong Wu won the galaxies category with a 360-degree view of the Milky Way (above, top), a mosaic which took two years to create — the northern hemisphere portion of the galaxy was photographed in China and the southern part in New Zealand. Jeffrey Lovelace's photo of the crescent moon over Death Valley sand dunes (above, bottom) took the prize in the skyscapes category.