Webcomic / Marooned

A not-chosen-for-his-smarts astronaut, John Floyd, upon landing on Mars discovers he hasn't taken enough fuel to come back. Whoops. Fortunately, when he and his robot companion decide to explore, they find a very nice bunch of natives who readily take them in.

Thus begins the funny, cute and touching story of attempting to come back home, of why is Mars a desert and how the Earth space program is not really what it seems, of friendship, responsibility and crazy stunts.

Marooned was drawn by Tom Dell'Aringa. Off the Web now, but you can buy PDF and (hopefully soon) dead-tree editions.

Tropes found on the surface of Mars: