Summary and Key Points: The X-15 program, spanning 199 flights between 1959 and 1968, pushed the boundaries of aeronautics ...

Other than spacecraft, aircraft are the fastest vehicles, leaving cars and bikes for dust. We take a look at the ten fastest planes ever flown. Though some uncrewed aircraft (like the X-43) have flown ...

Savior of many a cramped pair of legs, the jet stream is well known for lopping roughly an hour off long haul west-to-east flights. But it's working especially hard for travelers in economy class ...

Road speed limits date back to 1652, when horse-drawn vehicles were restricted from going at galloping speed within the New Netherland Colony, which covered parts of the mid-Atlantic United States.