UK startup Orbex has showed off its Prime Rocket's second stage. Inside the engineering prototype's shell is the "world's largest" 3D printed rocket engine, which is also designed to run on bio-propane, a renewable fuel source.
China's newest and biggest heavy-lift rocket was successfully launched today.
After decades of using the same type of rocket fuel, NASA has decided to find something more environmentally friendly to allow the next generation of spacecraft to thunder out of the atmosphere.
