大象传媒

Sir Patrick Moore notes that when we look at the prominent winter constellation Orion, we do not see bright galaxies. Dr Chris Lintott explains that during the winter months, we are looking through a stunted spiral arm of the Milky Way known as the Orion Spur. Because we are looking through our galaxy, it is difficult to see galaxies out in the wider Universe. But our view of the night sky changes in the spring and autumn.