Nasa has released a stunning image from Mars showing an area covered by a sea of "blue" sand dunes.
The picture shows the sand dunes covering the planet's northern polar cap, where temperatures can reach as low as -150C (-238F).
Nasa says the sand dunes actually cover an area the size of Texas, the second largest US state, which has an area of about 695,662 km²
The launch at Boca Chica, Texas, was streamed live by SpaceX
Frustrated Texans queued for hours for safe drinking water on Feb. 19, after an unprecedented and deadly "polar plunge" burst pipes and left millions in the U.S. state shivering without power or clean water for days.