If you're lucky enough to have clear skies tonight, you can catch a "mini planet parade" as Mars and Jupiter appear alongside ...

Some of the unusual rocks carry stories about water on Mars. One has hints of long-gone microbes. All tell of a dynamic, complex planet.

"The differences between Mars and Earth are even greater than we thought. There is more asymmetry between the southern and northern hemispheres than previously believed," explains Pedro Machado ...

Mars orbits at an average distance of 142 million miles (228 million km) from the sun. Its orbit is about 1.5 times the size of Earth's. Sunlight takes about 13 minutes to get to Mars, while it ...