These two classic viral videos by YouTuber yetipc1 illustrate what the planets would look like if they replaced our moon in the sky. Above, daytime, and night below: In the archives, another classic: Star Size Comparison HD. This Webby award-winning video collection exists to help teachers, librarians, and families spark kid wonder and curiosity. TKSST features smarter, more meaningful content than what's usually served up by YouTube's algorithms, and amplifies the creators who make that content. Curated, kid-friendly, independently-published. Support this mission by becoming a sustaining member today.