The latest update to Aurora, version 1.5, is now live. This iOS 7 refresh of the app also sees the addition of a new feature for viewing the sun as it is now – or indeed in the past. View the sun in dozens of different wavelengths and travel backwards or forwards in time by clicking to the left or the right of the solar disc.

Information on the solar observatories responsible for each image is available and better yet, if you access the new Images link from the solar activity page, you can view the sun as it was any time in the past for which you have data. This lets you scroll back to an x-ray flare for example and then view the sun as it was at the time.