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Peplowski: Mercury's composition is like what you'd get by partially melting enstatite chondrites
I love it when you talk like that Emily.
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Akatsuki update: test of main engine results: produces only 40N thrust, was originally 350N. Whole nozzle likely shattered
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Akatsuki update: Venus orbit entry in 2015 will employ reaction control thrusters. First they'll jettison oxidixer to reduce mass