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 →
Income Taxes You Would Pay in Each State
Some states have high rates. Some have low. But whether a state is lower or higher for you depends on more than just the high brackets.
Who Earns More Income in American Households?
Compared to 1970, a shift towards women making the higher income.