Home > Our Planet > Why Is The Sky Blue? Why Is The Sky Blue? Our Planet Puzzle and Acitvity Books Share on Pinterest Dr. Carolyn has a PhD in Astrophysics and she previous worked at NASA, Caltech, and the American Astronomical Society. In this video she discusses light waves and why the sky appears the color blue. Share on Pinterest Activity Books for Preschoolers - for homeschooling or kindergarden classes Related Posts How The Grand Canyon Was Made How Big Is The Atmosphere? The Bajau Laut have genetically adapted for extended sea dives How Do Ocean Tides Work? How Far Away From Everyone Can You Get?