Curious, indeed! Our pal Curiosity recently captured "several whirlwinds carrying Martian dust across Gale Crater" on Mars, according to NASA Jet Propulsion Laboratory. These dust devils rise up when sunshine warms the ground, prompting convective rising of air. In the video below, timing is accelerated and contrast has been modified to make frame-to-frame changes easier to see, NASA JPL explained online. | Space.com

Dust Devils are so cool (from this distance!) This fascinating wind phenomenon occurs when cold air in the upper atmosphere reacts with with warm air close to the ground and creates a vortex. Seldom do we ever see one this defined though! | WeatherSpy