Dust devils spotted on Mars
Dust devils spotted on Mars (NASA/CNN)
NASA's 'Curiosity' Mars rover has recently spotted several dust devils swirling around parts of the planet.
The rover has been investigating the whirlwinds on Mount Sharp's sand dunes-checking how far the winds move the grains of sand.
The dust devils are a result of sunshine warming the ground -- that prompt the air to rise.
Scientists say wind on the Red Planet has been carving the mountains and shaping the landscape for billions of years.