Mars, named after the god of war in Roman mythology, is one of the five planets well known to many of the world's ancient civilizations. Throughout history, it's been the subject of observation and speculation. But how much do you know about Earth's neighbor? This quiz just might teach you a thing or two about the "fourth rock from the Sun."
Test your Mars IQ
How much do you know about Earth's neighbor? This quiz just might teach you a thing or two about the "fourth rock from the Sun."