A "potentially hazardous" asteroid the size of a pyramid will skim past Earth today, Nasa has revealed. The space rock, known ...

As the aircraft flew in front of the sun, NASA’s team documented the changing air speeds as speeds over Mach 1, the speed of sound (761.23 miles per hour or 1,225.1 kilometers per hour).

A person fires a starting pistol. A distant observer stood 200 metres away (measured using a 20 m tape measure or trundle wheel) records the time between seeing the flash of light from the ...

A United States-based firm has pitched the idea for a hypersonic aircraft for cargo delivery that can travel at super-fast ...

A typical value for the wind is about 12 m/s and the speed of sound in air is about 330 m/s. It is useful to be able to convert between everyday units such miles per hour (mph) to the units used ...

Flagship aircraft, with unique flexible wing that ensures comfortable cabin experience over 14,800km flight, goes into ...