Polaris will build a two-stage, horizontal take-off and fully reusable hypersonic research vehicle, featuring a linear aerospike rocket engine. German company Polaris Spaceplanes announced on Jan. 27, ...

The aerospike engine—which uses air pressure to shape the downward force needed to launch a spacecraft—has been on the cusp of entering mainstream rocketry for decades. Now, a new company called Leap ...

The aerospike engine holds great promise for spaceflight, but for various reasons, has remained slightly out of reach for decades. But thanks to Leap 71, the technology has moved one step closer to a ...

Here’s what you’ll learn when you read this story: The aerospike engine—which uses air pressure to shape the downward force needed to launch a spacecraft—has been on the cusp of entering mainstream ...