How do you measure the speed of something super far away in space? By reading the rainbow of light! Astronomers spread light out to look at the detailed rainbow spectrum of something in space—like the disk around a black hole—to learn more about it. Spectra reveal information about speed, temperature, distance, and makeup. Learn to read the rainbow of light, and it can tell you the story of the universe. #ReadingTheRainbow | Space Telescope Science Institute

How hot are stars? Their light can tell you, if you know how to read the rainbow! Astronomers read patterns in the rainbow of starlight to discover the precise temperatures of stars, and discover more about each one’s unique story. #ReadingTheRainbow | Space Telescope Science Institute

New chapter, same magic.🌈✨ The Reading Rainbow theme song is back with a fresh new sound — give it a listen and fall in love all over again.🫶 | Reading Rainbow