The Earth is much larger than most people realize. You need to use engines if you want to efficiently navigate large sections of the planet. Everything from cars to planes relies on engines, but they ...

Robert Zubrin talks about reducing the mass of SpaceX Starship by a factor of 5 for a Starboat mini-Starship. The linear dimensions would scale by the cube root of 1/5 ≈ 0.58. This gives a diameter of ...

SpaceX’s Raptor engine and Blue Origin’s BE-4 engine are two key innovations in rocket propulsion, each with its unique design and performance characteristics. While the Raptor engine leverages ...

PARIS—France plans to demonstrate a higher-thrust rocket engine roughly on par with SpaceX's Raptor and Blue Origin’s BE-4 to avoid Europe falling further behind in the space race. Demand for launch ...

SpaceX has been testing its rocket hardware ahead of the eighth flight of its Starship megarocket. The Elon Musk-led company shared dramatic footage and photos showing the 33 Raptor engines on the ...