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EntertainmentThe supersonic plane flies faster than Concorde
The US Air Force's 3,218 km/h XB-70 Valkyrie aircraft inspired the design of later civil supersonic aircraft Concorde and Tupolev Tu-144.Top 5 supersonic aircraft models that attract attention
Long after Concorde was discontinued, commercial companies are now developing new models of supersonic passenger aircraft.
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Why did the ancient Babylonian civilization perish? Was it because they considered 'that thing' a daily meal?
Just discovered a 72km 'tear in the Earth', the world's second largest country is in fear of a tsunami attack
Top 7 facts about the hottest place in the world, where you can fry eggs at outdoor temperature
The Qing Dynasty collapsed, what surname did 20,000 royal descendants change to to integrate into the new era?
After 389 days in the Arctic, costing more than $160 million, hundreds of scientists brought back bad news: What was it?
How long does it take to fall in love with someone?
How much silver has ever been discovered in the world?
How does an atomic bomb work?
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