And while Ursa Major started small, the company is already well into development of its much larger Ripley engine. With 50,000 pounds of thrust, Ripley is aimed at the medium-launch market.

WASHINGTON — Ursa Major, a rocket propulsion company, announced Aug. 1 that Dan Jablonsky, former chief executive of Maxar Technologies, has been appointed as its new CEO effective Aug. 5.

WASHINGTON — Rocket propulsion startup Ursa Major announced Nov. 30 it has raised $138 million in Series D and D-1 funding rounds. Investors include Explorer 1 Fund and Eclipse, RTX Ventures ...

Ursa Major has been awarded a $32.9 million contract to develop and deliver 16 upgraded Hadley H13 engines to Stratolaunch. The multi-year program extends a series of successful flight ...

Ursa Major customers, ranging from “New Space” startups to enterprise-level aerospace leaders and the U.S. government, get to flight faster, more reliably, and cost-effectively.

Astra’s new Rocket 4 launch vehicle will use Ursa Major’s Hadley liquid engine to power its upper stage, the two companies announced Monday.. Astra has been tight-lipped about the new upper ...

Ursa Major had leased space at the property — a 90-acre former Ball Aerospace & Technologies Corp. test facility in the Berthoud Tech Center — since 2016, when it subleased a small bunker ...