Wikipedia:WikiProject Space 2019/DYK/July 21/2


NOTE: Because a preponderance of hooks on the suggestions page are biographies or are U.S. related, it is usually appropriate to have several hooks on biographies or U.S. topics in any given update, but never more than half of either. Further information is available at WP:DYKSG#J. Thanks.

Tips on assembling sets are at Wikipedia:Did you know/Preparation areas.

Hooks

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Michael Collins
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  • ... that Luna 2, on its way to becoming the first human-made object to make contact with the Moon, also made the first direct measurement of solar wind flux from outside Earth's magnetosphere?

Credits

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This is a temporary space organize credits to be copied to the queue at the right time.
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