Star trail photography is a technique that involves using a long exposure setting on a DSLR camera to capture the movement of stars in the nights sky. For best results photos such as these need to be taken when there is little or no cloud and away from highly populated areas to avoid light pollution.
When done correctly it's a technique that can create some truly spectacular photos. Here are 27 amazing examples of star trail photography that will leave you in awe of space.
If you'd like to give it a go yourself then here is a helpful guide that will take you through each step.