Abstract:In his George Darwin Lecture, Michael Werner celebrates the achievements of the Spitzer SpaceTelescope, an observatory that owes much of its success to the fact that it is cool by design.1: This infrared image from NASA's Spitzer Space Telescope shows the Orion nebula, which is on the lower half of the image, surrounded by a ring of dust. Light with wavelengths of 8 and 5.8 µm (red and orange) comes mainly from dust heated by starlight. Light of 4.5 µm (green) shows hot gas and dust; and light of 3.6 µm (blue)… Show more
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