The North American X-15 was a revolutionary rocket-powered aircraft from the 1960s designed to explore hypersonic flight at ...

The SR-72 “Darkstar” is the long-rumored hypersonic successor to the legendary SR-71 Blackbird, a secret project from ...

Need new running shoes? Check out HOKA’s new arrival Mach 6 shoes. The Mach 6 comes in styles for women, men and kids. HOKA also has markdowns on select items including Mach 5 styles.

The HOKA Mach 6 is one of the brand’s most popular running shoes, and right now, it’s on sale for just $98 at HOKA.

HOKA’s Mach 6 are one of the most popular running shoes in the country, and they just dropped a new color - Starlight Glow in both men’s and women’s styles - now available at Zappos.

With this deal, HOKA customers can get the men’s and women’s Mach 6 running shoe for just $112 instead of its original list price of $140.

The Mach 6 sneakers are the lightest and most responsive model of the Mach line to date, per the brand, with a low-profile cushion bed to keep your feet close to the ground while still providing ...

Right now is the perfect time to invest in a new pair of high-performance running shoes as HOKA’s ultra-popular Mach 6 sneakers are on sale for a limited time. With this online deal, you can ...

Which is not to say it will be easy. To launch a vehicle from a runway, boost to Mach 6, cruise around then land on the same runway requires no fewer than three separate propulsion systems: a jet ...

This spring, the Air Force was preparing for a groundbreaking test of the X-51 WaveRider, a hypersonic cruise missile that would reach speeds of up to Mach 6. But it looks like the WaveRider’s ...