Related Clues:

• 'The red planet'
• Red Planet
• Sci-fi landing site, sometimes
• Viking I destination
• Nearby orb
• Men's home?
• Global Surveyor subject
• Ares alias
• Pathfinder's path
• Viking landing site
• Phobos orbits it
• Planet beyond Earth
• Fourth of eight, now
• 'The War of the Worlds' invader
• Scratches, perhaps