Videos are generally available for preview to non-members as short clips. Limited full-length titles are also available. Log In to view the full length title.
Discover how scientists compare the reflected red, blue, and green light from planets in the solar system to identify distant planets. Carolyn Crow, an astronomer, describes how the amount of green, blue, and red light reflected by planets can be plotted. A diagram compares the color data of the planets and shows that Earth is easily distinguishable by its blue color.
