Like Earth and Venus, Mars has mountains, valleys, and volcanoes, but the red planet’s are by far the biggest and most dramatic. Olympus Mons, the solar system’s largest volcano, towers some ...

Many scientists agree that the volcano began forming during Mars’ Hesperian Period—around 3.7 to 3 billion years ago. Unlike the volcanoes of Earth, Olympus Mons keeps growing because there ...

Mars has been born afresh in the human mind ... and wildly rapid swings from dusty and warm to cold and clear. (At the summit of Olympus Mons, for instance, the typical daily high is 40 degrees ...

At first glance, Mars appears very different from Earth, but if you take a closer ... for a glimpse of the chasma's prominent mesa. Olympus Mons And no trip to Mars would be complete without ...

The distance from Earth to Pluto is 4.67 billion miles ... The highest mountain… is on Mars! Olympus Mons is the tallest mountain in our solar system, standing at roughly 13 miles high.