But Curiosity wasn't the only one with a geological mystery. At the same time, roughly 2,300 miles away on the other side of ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Toxic dust on Mars ...

A recent study suggests that Mars’ red hue originates from ferrihydrite, an iron oxide that forms in water-rich environments. Scientists recreated Martian dust in labs and found that the mineral ...

Toxic dust on Mars would make a future mission to the red planet extremely hazardous for astronauts and require significant countermeasures, new research suggests. Substances such as silica ...

Toxic dust on Mars would make a future mission to the red planet extremely hazardous for astronauts and require significant countermeasures, new research suggests. Substances such as silica, gypsum, ...