Researchers in Arizona have found that by painting the streets in Phoenix with gray paint, they could reduce average road surface temperatures by reflecting sunlight that hits it.
Early images of Comet 67P/Churyumov-Gerasimenko described the topography of the space rock, and gave researchers a unique view of the rocky surface. But what ESA astronomers on the Rosetta space team were not expecting was that early black & white images may also be conveying the comet’s truer colors.