KnowraMarsLinked fromLinked fromThe 25 pages that link to Mars, each with the reason it gives.All 25Broader topic 8Related 7Narrower topic 4Compared with 6Planetary habitabilityBroader topic: Its past environments test whether habitability can precede long-term surface dryness.Planetary scienceBroader topic: Its geology and climate history make it a central target for surface exploration.Solar SystemBroader topic: Its geology records a transition from wetter ancient conditions to a cold, dry present.Axial tiltBroader topic: Mars has an Earth-like present tilt, but its tilt varies substantially over time.Retrograde motionBroader topic: Its conspicuous retrograde loop near opposition was a central puzzle for early planetary astronomy.Terrestrial planetBroader topic: Mars preserves evidence of ancient rivers and a wetter climate on a terrestrial planet.Extraterrestrial lifeBroader topic: Its past environments make it a leading target in the search for ancient life.Kepler's second lawBroader topic: Kepler tested his account of planetary motion against Mars's notably eccentric orbit.