Yum, good stuff!
I'd also recommend the Univerity of Arizona's HiRISE site:
http://hirise.lpl.arizona.eduHiRISE is an imaging package onboard the Mars Reconnaissance Orbiter, and has been taking hi-res pics (as fine as 1 meter per pixel) of the planet's surface for over a decade. Besides monochrome HiRISE can also capture via Red, Blue and (near) IR filters. (In RGB images the green content is interpolated.) More recently the HiRISE folks have been making gorgeous 4K video pans down or across stitched image sequences. I doubt many people are aware of these, as they haven't been promoted at all AFAIK, but you can find 'em on YouTube. Here are links to a pair of recent ones:
https://youtu.be/oj4alRr8fQ0https://youtu.be/u1mdk3OoQWE-Dave-