Many science fiction stories in books, movies, and comics take place on the planet Mars. In real life, though, no person has ever traveled to the red planet. Instead, humanity has explored Mars with orbiters, landers, rovers, and other amazing technology. But even though we know a lot more about the red planet today, Mars is still a mystery. Learn the history of Mars exploration and read about scientists' plans to send more missions to study Mars. Someday, humans will step foot on the red planet and make even more discoveries. In the meantime, explore the planet's many mysteries!.