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| Science & Technology |
| US successfully flight tests scramjet-powered hypersonic missile which can travel five times faster than the speed of sound |
| 2021-09-28 |
| Posted by:Skidmark |
| #1 Chinese military unveils new 70-foot drone that can fly continuously for almost 24 hours as arms race with US continues |
| Posted by: Skidmark 2021-09-28 11:41 |