“Comet C/2013 A1 alongside Mars” by Sebastian Voltmer
This image is the last winner we have from the eleven categories in the Insight Astronomy Photographer of the Year competition 2015 — that of using a robotic telescope. It shows the power of remote imaging, since Sebastian Voltmer in Germany used the iTelescope at Siding Spring Observatory in Australia to capture Comet C/2013 A1 passing very close to Mars on 19 October 2014.