A startup says it can fly supersonic without the noisy boom. Here's how its airliner would compare to the famous Concorde.

A startup says it can fly supersonic without the noisy boom. Here's how its airliner would compare to the famous Concorde.

Boom Supersonic, Victor Drees/Daily Express/Hulton Archive/Getty Images

A startup wants to revive the era of the supersonic Concorde for the generations of flyers that missed out — but without the noisy boom and expensive ticket prices.

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