Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2018 September 10 Curiosity Vista from Vera Rubin Ridge Image Credit: NASA, JPL-Caltech, MSSS, Curiosity Mars Rover Explanation: If you could stand on Mars -- what might you see? If you were NASA's C