StarDate
William Huggins
In the mid 1860s, astronomers were just beginning to use a new tool to study the heavens. Called spectroscopy, it allowed them to split the light from an astronomical object into a rainbow of colors.
In the mid 1860s, astronomers were just beginning to use a new tool to study the heavens. Called spectroscopy, it allowed them to split the light from an astronomical object into a rainbow of colors.