A space probe named Hera captured images of Mars' small Deimos moon while on a mission to examine an asteroid.
Such "doorways" have been seen on the Red Planet before, spotted by those trawling through the wealth of raw images captured by the rovers on Mars, made available to the public by NASA.
A European spacecraft on a journey to study NASA's asteroid crash site did a quick pop-in of Mars on its way, capturing ...
New images captured by NASA's Curiosity rover show colorful clouds in the sky over Mars. The images were captured by the rover's Mastcam, which NASA's Jet Propulsion Laboratory compared to the rover's ...