This animated interactive explains how a research group is using light to measure the speed of objects millions of miles away. Light that is farther away will appear to be a different color than a light that is closer. So by measuring the rate of color shifts, they can estimate velocity.
Light from the center of the galaxy
Projects by Nathan Yau See All →
3-D-Printed Time Series Plates
After seeing a 1950s physical visualization, I wondered if I could follow a similar process using modern techniques.