This mars rover uses nasa api to fetch you the images of mars taken by nasa’s different mars rovers wrt the rover, sol(martian day) and page you select, it lets you iterate over the pages, where each page shows a collection of at max 25 images, using the provided left/right buttons or A/D keys or arrow-left/arrow-right keys and tells you if the rover selected didn’t take any image on a particular sol(martian day) or if the page selected does not exist(you need to be connected to the internet to view the images)