Illustrate a serene and calm goddess for Monday, reflecting the moon and the start of a new week. She should have a silvery, ethereal appearance with flowing robes and a crescent moon tiara. The setting might include a tranquil night sky with stars, emphasizing peace and reflection, masterpiece by Aaron Horkey and Jeremy Mann, masterpiece, best quality, Photorealistic, ultra-high resolution, photographic light, illustration by MSchiffer, fairytale, Hyper detailed, octane render, unreal engine v5