Design a captivating book cover for \"The Little Astronaut and the Moo

Design a captivating book cover for \"The Little Astronaut and the Moon Mystery.\" The cover shows a young girl in a cute astronaut suit, floating in space with a wide-eyed expression of wonder. Shes surrounded by friendly alien creatures and bright, twinkling stars. The Earth and the Moon are prominently displayed in the background, with the Moon featuring an intriguing, glowing symbol. The title is written in large, bold, and futuristic letters across the top, with cosmic elements like shooting stars and planets enhancing the magical, adventurous feel of the cover.