Pic shows Saturn and its rings with the Sun behind it, Instagram user says 'unrealistic'

NASA has shared a picture of Saturn captured by its Cassini aircraft in 2012. "Our Cassini spacecraft captured this image in the planet's shadow; the Sun is behind it, backlighting it, and the photo was enhanced with infrared, red, and violet spectral filters," it wrote. "So unrealistic!" an Instagram user commented, while another comment read, "The universe is magnificent."