There’s a moment when you push open the door at Doc Sweets’ Candy Company in Clawson, Michigan, when your adult self ...

WASHINGTON — Rocket engine maker Ursa Major landed a $32.9 million deal to supply 16 advanced propulsion systems to Stratolaunch for hypersonic flight tests.

According to Ursa Major, the H13 is an evolution of the Hadley engine, which already powers Stratolaunch’s Talon-A hypersonic test vehicle. Talon-A, if you are unaware, is a reusable hypersonic ...