A NASA satellite captured a yearly phenomena occurring on the surface of Mars: a massive ice avalanche.
“Every spring the sun shines on the side of the stack of layers at the North Pole of Mars known as the north polar layered deposits,” NASA said. "The warmth destabilizes the ice and blocks break loose.
“When they reach the bottom of the more than 500 meter tall cliff face, the blocks kick up a cloud of dust. The layers beneath are different colors and textures depending on the amount of dust mixed with ice.”
NASA’s Mars Reconnaissance Orbiter has been circling the Red Planet since it was launched in 2005.
The photo was published by NASA on Sept. 11.