The image shows a portion of Enceladus with an edge of its disk. Bright glowing gaseous matter extends from relatively small areas of the surface into the space at the edge of Enceladus. This image shows a portion of Saturn's moon Enceladus. What is happening in the bright region that extends out from the surface? A comet is impacting the surface. Sunlight is reflecting off clouds in Enceladus's atmosphere. Pebble-size particles from Saturn's rings are raining down onto the surface. Ice particles and water vapor are spraying out from the surface