Crossword clues for the word: ONMARS The word ONMARS has appeared as an answer to at least 5 crossword clues on different crossword puzzles. Crossword clues for ONMARS Showing 1 to 5 of 5 results Clue(s) "Like some sci-fi aliens, location-wise" End of the sci-fi film titles 'First Man ...' and 'Last Days ...' Where future humans may live Where Mark Watney was stranded for about 560 sols, in a 2015 film Where Olympus Mons is