"I'll always remember the first time I saw those iridescent clouds and was sure at first it was some color artifact."

NASA’s Curiosity rover captured stunning twilight images of Martian clouds, revealing iridescent red and green tinges. These noctilucent clouds, consisting of water-ice and carbon-dioxide ice, appear higher in the atmosphere and are especially noted for their 'mother-of-pearl' iridescence.

The Sun sets differently on Mars. Part of that is due to its distance from the star (an average of 142 million miles versus Earth’s roughly 93 million miles), but it also has to do with the planet’s atmosphere. A great example of the effects can be seen in the Red Planet’s noctilucent clouds.

NASA astronaut Suni Williams reacts to spacewalk record, extended stay in orbit and more 09:27. New images captured by NASA's Curiosity rover show colorful clouds in the sky over

Curiosity, a set of NASA's robotic "eyes" on the Red Planet, recorded 16 minutes of so-called noctilucent clouds flying overhead on Jan. 17. These clouds, sometimes referred to as twilight clouds because they're too faint to see in daylight,

NASA’s Curiosity rover has captured breathtaking images of iridescent clouds drifting across the Martian sky, revealing a celestial spectacle unlike anything seen before. These clouds, composed of frozen carbon dioxide ice,