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While sunsets on Mars are uniquely moody, NASA's Curiosity rover has captured a stunning image of a martian sunset, featuring light rays that illuminated a bank of clouds as the sun set over the horizon.These 'sun rays' are also known as crepuscular rays, from the Latin word for 'twilight'. It was the first time sun rays have been so clearly viewed on Mars.https://twitter.com/MarsCuriosity/status/1632838392420667394Curiosity, which was built by NASA's Jet Propulsion Laboratory and managed by Caltech in Pasadena, California, on February 2 captured the scene during the rover's newest twilight cloud survey, which builds on its 2021 observations of noctilucent, or night-shining, clouds.While most Martian clouds hover no more than 37 miles (60 kilometres) above the ground and are composed of water ice, the clouds in the latest images appear to be at a higher altitude, where it's especially cold. That suggests these clouds are made of carbon dioxide ice or dry ice.On Earth, clouds provide scientists with complex but crucial information for understanding the weather. By looking at when and where clouds form, scientists can learn more about the Martian atmosphere's composition and temperatures, and the winds within it.The 2021 cloud survey included more imaging by Curiosity's black-and-white navigation cameras, providing a detailed look at a cloud's structure as it moves. But the recent survey, which began in January and will wrap up in mid-March, relies more often on the rover's colour Mast Camera, or Mastcam, which helps scientists see how cloud particles grow over time.In addition to the image of sun rays, Curiosity captured a set of colourful clouds shaped like a feather on Jan. 27. When illuminated by sunlight, certain types of clouds can create a rainbowlike display called iridescence."Where we see iridescence, it means a cloud's particle sizes are identical to their neighbours in each part of the cloud," said Mark Lemmon, an atmospheric scientist with the Space Science Institute in Boulder, Colorado. "By looking at colour transitions, we're seeing particle size changing across the cloud. That tells us about the way the cloud is evolving and how its particles are changing size over time."Curiosity captured both the sun rays and iridescent clouds as panoramas, each of which was stitched together from 28 images sent to Earth. The images have been processed to emphasize the highlights.( With inputs from ANI )Disclaimer: This post has been auto-published from an agency feed without any modifications to the text and has not been reviewed by an editor

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