Experts are planning to develop the "revolutionary" hypersonic passenger jets, it has been reported.
A British company Reaction Engines has been testing hypersonic aircraft which could travel at speeds of Mach 2.5 all the way up to Mach 5, the Mirror reported.
And NASA is reportedly working on the next generation of passenger planes, looking to create sleek and safe craft to combat the current ban on supersonic flight over land.
In 2010, the Australian military tested potential hypersonic flights with limited success.
Such speeds would see the journey from London to New York cut to just 58 minutes, while a jaunt to Japan would be around three hours.
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