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  1. Tyger

    the Martian helicopter

    I see they are planning to launch this thing next month: https://www.avweb.com/aviation-news/space-flight/nasa-eyes-april-for-first-helicopter-flight-on-mars/ Doing a bit of research, the atmospheric pressure at the surface of Mars is only about 6.5 millibars (compared to over a thousand...
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