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 FlowingData See All →
It’s hard to think of much else. These maps show the racial divide between black and white people in major cities.
About 18 percent of couple households are single-income. I wanted to know what the earner in these homes usually do.
Who Earned a Higher Salary Than You
Work changed over the years. Salaries changed over the years. I was curious: If you compared your personal income from present day, how would it compare to the distribution of salaries in previous decades?