M. LEDLOW ET AL / NRAO / AUI / NSF / SCIENCE PHOTO LIBRARY M. LEDLOW ET AL / NRAO / AUI / NSF / SCIENCE PHOTO LIBRARY
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Mercury temperature map. Coloured radio image of the surface of the planet Mercury, showing the range of temperatures across its surface. This image was obtained by the VLA (Very Large Array) radio observatory at a 2 centimetre wavelength. The hotter regions are represented by the yellow colour. Mercury has two hot poles on its equator, produced by the intense heat of the nearby Sun. The far pole is hidden, but may be deduced by the heating at the edge of the disc at lower right.
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