An Astronaut Discovering a Secret Cave on an Isolated Asteroid

A brave astronaut, suited up and carrying a flashlight, stands at the entrance of a mysterious cave on the surface of a lonely asteroid. The rocky walls seem to hide something unknown, with strange markings or glowing crystals faintly visible in the shadows. The asteroid itself floats in space, with the endless void and distant planets forming the backdrop. For coloring, use shades of gray and brown for the asteroid’s surface, with darker shadows near the cave entrance. The astronaut’s suit can be white, blue, or metallic silver, while the cave can have glowing green, blue, or purple crystals to add a sense of mystery. The sky should be black with scattered white stars for a dramatic effect.