Mistletoe is one of those plants that no one seems to remember until the holidays, when sprigs of it start appearing in doorways, prompting kisses and laughter. The plant, with its bright green leaves and white berries, is festive enough — but do you really know much about it? What does mistletoe look like growing in... View Article
A bubbling cauldron of star birth is highlighted in this image from NASA's Spitzer Space Telescope. Infrared light that we can't see with our eyes has been color-coded, such that the shortest wavelengths are shown in blue and the longest in red. The middle wavelength range is green.