For your YouTube channel focused on galaxy information, here's a description you could use:

"Welcome to the-galaxy-shorts your ultimate space exploration hub! Dive deep into the mysteries of the universe as we uncover fascinating facts and stunning visuals about galaxies, stars, black holes, nebulae, and the cosmos. Whether you're a space enthusiast or simply curious about the wonders beyond our planet, we provide easy-to-understand, yet captivating content that brings the vastness of the galaxy right to your screen. Subscribe and join us on a cosmic journey across light years, exploring the infinite beauty of the universe!"

Feel free to adjust it to match your channel's tone and vision!