Prompt: Picture an astronaut on the moon, taking a selfie with a mobile phone. The astronaut strikes a pose, flashing a peace sign, helmet reflecting Earth in the background. The lunar landscape provides a surreal setting. Configure camera settings with an [f-stop] of 4.0 for a moderate depth of field, set the shutter speed to [1/600] to capture the astronaut's pose, and maintain an ISO rating of [250] for optimal exposure on the lunar surface. Illuminate the scene with natural sunlight, highlighting the astronaut's suit and casting soft shadows on the moon's surface.