Leo the Little Astronaut climbed into his rocket ship, which looked suspiciously like his cozy blue bed. With a soft click of his seatbelt, he took off, drifting past the window as the world turned into a sleepy, dark blanket of velvet. First, he floated by Mercury, where the rocks were cooling off after a long, sunny day. 'Goodnight, tiny Mercury,' Leo whispered, waving a sleepy hand. Next, he zipped toward Venus, shining bright like a soft candle. 'Rest well, bright Venus,' he hummed. As Leo drifted deeper into the starry sea, he visited Earth's neighbor, Mars, the dusty red traveler. He tucked a blanket of stardust around the planet, whispering, 'Sleep tight, brave Mars.' Further out, Jupiter danced with its many moons, while Saturn spun its golden rings in a slow, graceful circle. 'Hush now, giant rings,' Leo sang. Uranus and Neptune, the quiet blue giants at the edge of the dark, seemed to glow with a gentle, sleepy light as Leo drifted past. Finally, Leo looked out at the vast, shimmering field of stars. They blinked back at him, slowly, like sleepy eyelids. 'Goodnight to all the stars,' Leo said, his own eyes feeling very heavy. He steered his ship back toward his room, feeling the warmth of the galaxy tucked into his heart. He learned that even in the vast, wide universe, everything has a time to rest and recharge for a new, exciting day. He landed back on his soft pillow, surrounded by his plush space-toy friends. As he drifted into dreamland, he knew that the universe was safe and sound, just like he was. Sleep was a special adventure for the soul, and even the biggest planets needed a quiet moment to dream. With one last look at the glowing moon through his window, Leo closed his eyes, ready to float through his dreams until the morning sun came to say hello again.