'Hypersonic rocket sled' shoots down track at 6,599 miles per hour during military testing

Published: 11/09/2019
'Hypersonic rocket sled' shoots down track at 6,599 miles per hour during military testing
Source: DAILYMAIL.CO.UK

The U.S. Air Force released video last week of one of its latest hypersonic sled tests. The footage shows the sled traveling more than one mile per second on a track in rural New Mexico.

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