Arsia Mons, which dwarfs Earth's tallest volcanoes, and its two neighboring volcanoes are often surrounded by water ice ...

Mysterious dark streaks first observed on Mars in the 1970s are not what many believed they were. Scientists now say the ...

Despite having maps of Mars more accurate than many of Earth's own maps, the Red Planet still holds many unanswered questions ...

For decades, scientists believed that long, dark streaks on the surface of Mars were a sign of something crucial: running ...

Strange, dark streaks on Martian slopes that once hinted at flowing water are now believed to be dry dust slides, revealed ...

Mars, the other world, followed a different path. Today the Martian surface is hostile to life as we know it, but as this scientific story goes, Mars may have once hosted a rich abundance of microbes.

Mini sand dunes form from bouncing sand on hard surfaces. A new model explains their growth on both Earth and Mars. A new ...