Ursa Major Technologies has completed the first hot-fire tests of its Hadley H13 liquid rocket engine, a milestone the company says could support reusable hypersonic test vehicles and smaller launch ...

When building a model rocket, it can be fun to get into the maths of it all—calculating the expected performance of your build, and then seeing how it measures up in the real world. To aid in that ...

Oct. 22 (UPI) --Chinese space authorities reached a new milestone this week as they tested a reusable rocket that they hope to use to join the United States, Japan and other nations in the bid for ...