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Nasa Spacecraft Confirms Theories, Sees Surprises at Mercury

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Crater Degas, Mercury

Image of crater Degas was obtained as a high-resolution targeted observation (90 m/pixel). Impact melt coats its floor; as the melt cooled and shrank, it formed the cracks observed across the crater. For context, Mariner 10s view of Degas is at left.

NASA / Johns Hopkins University Applied Physics Laboratory / Carnegie Institution of Washington

NASA scientists are making new discoveries about the planet Mercury. Data from MESSENGER, the first spacecraft to orbit Mercury, is giving scientists important clues to the origin of the planet and its geological history and helping them better understand its dynamic interior and exterior processes.

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