NASA’s MESSENGER spacecraft has achieved Hermian orbit and has sent back the first photograph of Mercury from Orbit, an image that shows an Debussy crater with ejecta rays. In the first six hours after orbital insertion, MESSENGER took more than 360 images. It will be photographing portions of Mercury not captured by three previous flyby missions. MESSENGER main science mission, which includes a complete surface mapping, is expected to begin on April 4.
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