Events
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1999 - The Mars Polar Lander launches.
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1722 - Fredric Hasselquist, Swedish naturalist
Deaths
1641 - Jeremiah Horrocks, English astronomer
1927 - Carle David Tolmé Runge, German physicist
1969 - Jean Focas, Greco-French astronomer
1980 - Joy Adamson, Czech conservationist
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1496 - Leonardo da Vinci unsuccessfully tests a flying machine.
Even though it didn't fly, he did an incredible job with that and so many other things, for a man at that point in time!
Dave Briggs :~)