Create a dreamy, ethereal image with celestial elements in the background

Create a dreamy, ethereal image with celestial elements in the background. At the bottom of the image, show half of a large planet's surface. The planet should be significantly larger than other elements and only its upper half should be visible, occupying the lower part of the frame. Add a soft, misty glow around the celestial bodies and use a pastel color palette to enhance the dreamlike atmosphere. Include some swirling, translucent clouds or nebulae to create a sense of magic and wonder.